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The History of Computing: A Very Short Introduction

The History of Computing: A Very Short Introduction

The History of Computing: A Very Short Introduction

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This book describes the central events, machines, and people in the history of computing, and traces how innovation has brought us from pebbles used for counting, to the modern age of the computer. It has a strong historiographical theme that offers a new perspective on how to understand the historical narratives we have constructed, and examines the unspoken assumptions that underpin them. It describes inventions, pioneers, milestone systems, and the context of their use. It starts with counting, and traces change through calculating aids, mechanical calculation, and automatic electronic computation, both digital and analogue. It shows how four threads—calculation, automatic computing, information management, and communications—converged to create the ‘information age’. It examines three master narratives in established histories that are used as aids to marshal otherwise unmanageable levels detail. The treatment is rooted in the principal episodes that make up canonical histories of computing.

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September 1, 2009

11 min read

The Origin of Computing

The information age began with the realization that machines could emulate the power of minds

By Martin Campbell-Kelly

In the standard story, the computer’s evolution has been brisk and short. It starts with the giant machines warehoused in World War II–era laboratories. Microchips shrink them onto desktops, Moore’s Law predicts how powerful they will become, and Microsoft capitalizes on the software. Eventually small, inexpensive devices appear that can trade stocks and beam video around the world. That is one way to approach the history of computing—the history of solid-state electronics in the past 60 years.

But computing existed long before the transistor. Ancient astronomers developed ways to predict the motion of the heavenly bodies. The Greeks deduced the shape and size of Earth. Taxes were summed; distances mapped. Always, though, computing was a human pursuit. It was arithmetic, a skill like reading or writing that helped a person make sense of the world.

The age of computing sprang from the abandonment of this limitation. Adding machines and cash registers came first, but equally critical was the quest to organize mathematical computations using what we now call “programs.” The idea of a program first arose in the 1830s, a century before what we traditionally think of as the birth of the computer. Later, the modern electronic computers that came out of World War II gave rise to the notion of the universal computer—a machine capable of any kind of information processing, even including the manipulation of its own programs. These are the computers that power our world today. Yet even as computer technology has matured to the point where it is omnipresent and seemingly limitless, researchers are attempting to use fresh insights from the mind, biological systems and quantum physics to build wholly new types of machines.

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The Difference Engine In 1790, shortly after the start of the French Revolution, the government decided that the republic required a new set of maps to establish a fair system of property taxation.* He also ordered a switch from the old imperial system of measurements to the new metric system. To facilitate all the conversions, the French ordinance survey office began to compute an exhaustive collection of mathematical tables.

In the 18th century, however, computations were done by hand. A factory floor of between 60 and 80 human computers added and subtracted sums to fill in line after line of the tables for the survey’s Tables du Cadastre project. It was grunt work, demanding no special skills above basic numeracy and literacy. In fact, most computers were hairdressers who had lost their jobs—aristocratic hairstyles being the sort of thing that could endanger one’s neck in revolutionary France.

The project took about 10 years to complete, but by then, the war-torn republic did not have the funds necessary to publish the work. The manuscript languished in the Académie des Sciences for decades. Then, in 1819, a promising young British scientist named Charles Babbage would view it on a visit to Paris. Babbage was 28 at the time; three years earlier he had been elected to the Royal Society, the most prominent scientific organization in Britain. He was also very knowledgeable about the world of human computers—at various times he personally supervised the construction of astronomical and actuarial tables.

On his return to England, Babbage decided he would replicate the French project not with human computers but with machinery. England at the time was in the throes of the Industrial Revolution. Jobs that had been done by human or animal labor were falling to the efficiency of the machine. Babbage saw the power of this world of steam and brawn, of interchangeable parts and mechanization, and realized that it could replace not just muscle but the work of minds.

He proposed the construction of his Calculating Engine in 1822 and secured government funding in 1824. For the next decade he immersed himself in the world of manufacturing, seeking the best technologies with which to construct his engine.

In 1833 Babbage celebrated his annus mirabilis. That year he not only produced a functioning model of his calculating machine (which he called the Difference Engine) but also published his classic Economy of Machinery and Manufactures, establishing his reputation as the world’s leading industrial economist. He held Saturday evening soirees at his home in Devonshire Street in London, which were attended by the front rank of society. At these gatherings the model Difference Engine was placed on display as a conversation piece.

A year later Babbage abandoned the Difference Engine for a much grander vision that he called the Analytical Engine. Whereas the Difference Engine had been limited to the single task of table making, the Analytical Engine would be capable of any mathematical calculation. Like a modern computer, it would have a processor that performed arithmetic (the “mill”), memory to hold numbers (the “store”), and the ability to alter its function via user input, in this case by punched cards. In short, it was a computer conceived in Victorian technology .

Babbage’s decision to abandon the Difference Engine for the Analytical Engine was not well received, however, and the government demurred to supply him with additional funds. Undeterred, he produced thousands of pages of detailed notes and machine drawings in the hope that the government would one day fund construction. It was not until the 1970s, well into the computer age, that modern scholars studied these papers for the first time. The Analytical Engine was, as one of those scholars remarked, almost like looking at a modern computer designed on another planet.

The Dark Ages

Babbage’s vision, in essence, was digital computing. Like today’s devices, such machines manipulate numbers (or digits) according to a set of instructions and produce a precise numerical result.

Yet after Babbage’s failure, computation entered what English mathematician L. J. Comrie called the Dark Age of digital computing—a period that lasted into World War II. During this time, computation was done primarily with so-called analog computers, machines that model a system using a mechanical analog. Suppose, for example, an astronomer would like to predict the time of an event such as a solar eclipse. To do this digitally, she would numerically solve Kepler’s laws of motion. She could also create an analog computer, a model solar system made of gears and levers (or a simple electronic circuit) that would allow her to “run” time into the future.

Before World War II, the most sophisticated practical analog computing instrument was the Differential Analyzer, developed by Vannevar Bush at the Massachusetts Institute of Technology in 1929. At that time, the U.S. was investing heavily in rural electrification, and Bush was investigating electrical transmission. Such problems could be encoded in ordinary differential equations, but these were very time-consuming to solve. The Differential Analyzer allowed for an approximate solution without any numerical processing. The machine was physically quite large—it filled a good-size laboratory—and was something of a Rube Goldberg construction of gears and rotating shafts. To “program” the machine, technicians connected the various subunits of the device using screwdrivers, spanners and lead hammers. Though laborious to set up, once done the apparatus could solve in minutes equations that would take several days by hand. A dozen copies of the machine were built in the U.S. and England.

One of these copies made its way to the U.S. Army’s Aberdeen Proving Ground in Maryland, the facility responsible for readying field weapons for deployment. To aim artillery at a target of known range, soldiers had to set the vertical and horizontal angles (the elevation and azimuth) of the barrel so that the fired shell would follow the desired parabolic trajectory—soaring skyward before dropping onto the target. They selected the angles out of a firing table that contained numerous entries for various target distances and geographic conditions.

Every entry in the firing table required the integration of an ordinary differential equation. An on-site team of 200 computers would take two to three days to do each calculation by hand. The Differential Analyzer, in contrast, would need only about 20 minutes.

Everything is Change

On December 7, 1941, Japanese forces attacked the U.S. Naval base at Pearl Harbor. The U.S. was at war. Mobilization meant the army needed ever more firing tables, each of which contained about 3,000 entries. Even with the Differential Analyzer, the backlog of calculations at Aberdeen was mounting.

Eighty miles up the road from Aberdeen, the Moore School of Electrical Engineering at the University of Pennsylvania had its own differential analyzer. In the spring of 1942 a 35-year-old instructor at the school named John W. Mauchly had an idea for how to speed up calculations: construct an “electronic computor” [ sic ] that would use vacuum tubes in place of the mechanical components. Mauchly, a bespectacled, theoretically-minded individual, probably would not have been able to build the machine on his own. But he found his complement in an energetic young researcher at the school named J. Presper (“Pres”) Eckert, who had already showed sparks of engineering genius.

A year after Mauchly made his original proposal, following various accidental and bureaucratic delays, it found its way to Lieutenant Herman Goldstine, a 30-year-old Ph.D. in mathematics from the University of Chicago who was the technical liaison officer between Aberdeen and the Moore School. Within days Goldstine got the go-ahead for the project. Construction of the ENIAC—for Electronic Numerical Integrator and Computer—began on April 9, 1943. It was Eckert’s 23rd birthday.

Many engineers had serious doubts about whether the ENIAC would ever be successful. Conventional wisdom held that the life of a vacuum tube was about 3,000 hours, and the ENIAC’s initial design called for 5,000 tubes. At that failure rate, the machine would not function for more than a few minutes before a broken tube put it out of action. Eckert, however, understood that the tubes tended to fail under the stress of being turned on or off. He knew it was for that reason radio stations never turned off their transmission tubes. If tubes were operated significantly below their rated voltage, they would last longer still. (The total number of tubes would grow to 18,000 by the time the machine was complete.)

Eckert and his team completed the ENIAC in two and a half years. The finished machine was an engineering tour de force, a 30-ton behemoth that consumed 150 kilowatts of power. The machine could perform 5,000 additions per second and compute a trajectory in less time than a shell took to reach its real-life target. It was also a prime example of the role that serendipity often plays in invention: although the Moore School was not then a leading computing research facility, it happened to be in the right location at the right time with the right people.

Yet the ENIAC was finished in 1945, too late to help in the war effort. It was also limited in its capabilities. It could store only up to 20 numbers at a time. Programming the machine took days and required manipulating a patchwork of cables that resembled the inside of a busy telephone exchange. Moreover, the ENIAC was designed to solve ordinary differential equations. Some challenges—notably, the calculations required for the Manhattan Project—required the solution of partial differential equations.

John von Neumann was a consultant to the Manhattan Project when he learned of the ENIAC on a visit to Aberdeen in the summer of 1944. Born in 1903 into a wealthy Hungarian banking family, von Neumann was a mathematical prodigy who tore through his education. By 23 he had become the youngest ever privatdocent (the approximate equivalent of an associate professor) at the University of Berlin. In 1930 he emigrated to the U.S., where he joined Albert Einstein and Kurt Gödel as one of first faculty members of the Institute for Advanced Study in Princeton, N.J. He became a naturalized U.S. citizen in 1937.

Von Neumann quickly recognized the power of the machine’s computation, and in the several months after his visit to Aberdeen, he joined in meetings with Eckert, Mauchly, Goldstine and Arthur Burks—another Moore School instructor—to hammer out the design of a successor machine, the Electronic Discrete Variable Automatic Computer, or EDVAC.

The EDVAC was a huge improvement over the ENIAC. Von Neumann introduced the ideas and nomenclature of Warren McCulloch and Walter Pitts, neuroscientists who had developed a theory of the logical operations of the brain (this is where we get the term computer “memory”). He thought of the machine as being made of five core parts: Memory held not just numerical data but also the instructions for operation. An arithmetic unit performed arithmetic options. An input “organ” enabled the transfer of programs and data into memory, and an output organ recorded the results of computation. Finally, a control unit coordinated the entire system.

This layout, or architecture, makes it possible to change the computer’s program without altering the physical structure of the machine. Programs were held in memory and could be modified in a trice. Moreover, a program could manipulate its own instructions. This feature would not only enable von Neumann to solve his partial differential equations, it would confer a powerful flexibility that forms the very heart of modern computer science.

In June 1945 von Neumann wrote his classic First Draft of a Report on the EDVAC on behalf of the group. In spite of its unfinished status, it was rapidly circulated among the computing cognoscenti with two consequences. First, there never was a second draft. Second, von Neumann ended up with most of the credit for the invention.

Machine Evolution

The subsequent 60-year diffusion of the computer within society is a long story that has to be told in another place. Perhaps the single most remarkable development was that the computer—originally designed for mathematical calculations—turned out, with the right software, to be infinitely adaptable to different uses, from business data processing to personal computing to the construction of a global information network.

We can think of computer development as having taken place along three vectors—hardware, software and architecture. The improvements in hardware over the past 50 years are legendary. Bulky electronic tubes gave way in the late 1950s to “discrete” transistors—that is, single transistors individually soldered into place. In the mid-1960s microcircuits connected several transistors—then hundreds of transistors, then thousands of transistors—on a silicon “chip.” The microprocessor, developed in the early 1970s, held a complete computer processing unit on a chip. The microprocessor gave rise to the PC and now controls devices ranging from sprinkler systems to ballistic missiles.

The challenges of software were more subtle. In 1947 and 1948 von Neumann and Goldstine produced a series of reports called Planning and Coding of Problems for an Electronic Computing Instrument . In these reports they set down dozens of routines for mathematical computation with the expectation that some lowly “coder” would be able to effortlessly convert them into working programs. It was not to be. The process of writing programs and getting them to work was excruciatingly difficult. The first to make this discovery was Maurice Wilkes, the University of Cambridge computer scientist who had created the first practical stored-program computer. In his Memoirs, Wilkes ruefully recalled the very moment in 1949 when “the realization came over me with full force that a good part of the remainder of my life was going to be spent in finding the errors in my own programs.”

He and others at Cambridge developed a method of writing computer instructions in a symbolic form that made the whole job easier and less error prone. The computer would take this symbolic language and then convert it into binary. IBM introduced the programming language Fortran in 1957, which greatly simplified the writing of scientific and mathematical programs. At Dartmouth College in 1964, educator John G. Kemeny and computer scientist Thomas E. Kurtz invented Basic, a simple but mighty programming language intended to democratize computing and bring it to the entire undergraduate population. With Basic even schoolkids—the young Bill Gates among them—could begin to write their own programs.

In contrast, computer architecture—that is, the logical arrangement of subsystems that make up a computer—has barely evolved. Nearly every machine in use today shares its basic architecture with the stored program computer of 1945. The situation mirrors that of the gasoline-powered automobile—the years have seen many technical refinements and efficiency improvements in both, but the basic design is largely the same. And although it is certainly possible to design a radically better device, both have achieved what historians of technology call “closure.” Investments over the decades have produced such excellent gains that no one has had a compelling reason to invest in an alternative.

Yet there are multiple possibilities for radical evolution. For example, in the 1980s interest ran high in so-called massively parallel machines, which contained thousands of computing elements operating simultaneously, designed for computationally intensive tasks such as weather forecasting and atomic weapons research. Computer scientists have also looked to the human brain for inspiration. We now know that the brain is not a general-purpose computer made from gray matter. Rather it contains specialized processing centers for different tasks, such as face recognition or speech understanding. Scientists are harnessing these ideas in “neural networks” for applications such as automobile license plate identification and iris recognition. They could be the next step in a centuries-old process: embedding the powers of the mind in the guts of a machine.

*Erratum (10/15/09): This sentence has been edited since posting to correct a factual error.

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Bell Laboratories scientist George Stibitz uses relays for a demonstration adder

research paper on history of computers

“Model K” Adder

Called the “Model K” Adder because he built it on his “Kitchen” table, this simple demonstration circuit provides proof of concept for applying Boolean logic to the design of computers, resulting in construction of the relay-based Model I Complex Calculator in 1939. That same year in Germany, engineer Konrad Zuse built his Z2 computer, also using telephone company relays.

Hewlett-Packard is founded

research paper on history of computers

Hewlett and Packard in their garage workshop

David Packard and Bill Hewlett found their company in a Palo Alto, California garage. Their first product, the HP 200A Audio Oscillator, rapidly became a popular piece of test equipment for engineers. Walt Disney Pictures ordered eight of the 200B model to test recording equipment and speaker systems for the 12 specially equipped theatres that showed the movie “Fantasia” in 1940.

The Complex Number Calculator (CNC) is completed

research paper on history of computers

Operator at Complex Number Calculator (CNC)

In 1939, Bell Telephone Laboratories completes this calculator, designed by scientist George Stibitz. In 1940, Stibitz demonstrated the CNC at an American Mathematical Society conference held at Dartmouth College. Stibitz stunned the group by performing calculations remotely on the CNC (located in New York City) using a Teletype terminal connected to New York over special telephone lines. This is likely the first example of remote access computing.

Konrad Zuse finishes the Z3 Computer

research paper on history of computers

The Zuse Z3 Computer

The Z3, an early computer built by German engineer Konrad Zuse working in complete isolation from developments elsewhere, uses 2,300 relays, performs floating point binary arithmetic, and has a 22-bit word length. The Z3 was used for aerodynamic calculations but was destroyed in a bombing raid on Berlin in late 1943. Zuse later supervised a reconstruction of the Z3 in the 1960s, which is currently on display at the Deutsches Museum in Munich.

The first Bombe is completed

research paper on history of computers

Bombe replica, Bletchley Park, UK

Built as an electro-mechanical means of decrypting Nazi ENIGMA-based military communications during World War II, the British Bombe is conceived of by computer pioneer Alan Turing and Harold Keen of the British Tabulating Machine Company. Hundreds of allied bombes were built in order to determine the daily rotor start positions of Enigma cipher machines, which in turn allowed the Allies to decrypt German messages. The basic idea for bombes came from Polish code-breaker Marian Rejewski's 1938 "Bomba."

The Atanasoff-Berry Computer (ABC) is completed

research paper on history of computers

The Atanasoff-Berry Computer

After successfully demonstrating a proof-of-concept prototype in 1939, Professor John Vincent Atanasoff receives funds to build a full-scale machine at Iowa State College (now University). The machine was designed and built by Atanasoff and graduate student Clifford Berry between 1939 and 1942. The ABC was at the center of a patent dispute related to the invention of the computer, which was resolved in 1973 when it was shown that ENIAC co-designer John Mauchly had seen the ABC shortly after it became functional.

The legal result was a landmark: Atanasoff was declared the originator of several basic computer ideas, but the computer as a concept was declared un-patentable and thus freely open to all. A full-scale working replica of the ABC was completed in 1997, proving that the ABC machine functioned as Atanasoff had claimed. The replica is currently on display at the Computer History Museum.

Bell Labs Relay Interpolator is completed

research paper on history of computers

George Stibitz circa 1940

The US Army asked Bell Laboratories to design a machine to assist in testing its M-9 gun director, a type of analog computer that aims large guns to their targets. Mathematician George Stibitz recommends using a relay-based calculator for the project. The result was the Relay Interpolator, later called the Bell Labs Model II. The Relay Interpolator used 440 relays, and since it was programmable by paper tape, was used for other applications following the war.

Curt Herzstark designs Curta calculator

research paper on history of computers

Curta Model 1 calculator

Curt Herzstark was an Austrian engineer who worked in his family’s manufacturing business until he was arrested by the Nazis in 1943. While imprisoned at Buchenwald concentration camp for the rest of World War II, he refines his pre-war design of a calculator featuring a modified version of Leibniz’s “stepped drum” design. After the war, Herzstark’s Curta made history as the smallest all-mechanical, four-function calculator ever built.

First Colossus operational at Bletchley Park

research paper on history of computers

The Colossus at work at Bletchley Park

Designed by British engineer Tommy Flowers, the Colossus is designed to break the complex Lorenz ciphers used by the Nazis during World War II. A total of ten Colossi were delivered, each using as many as 2,500 vacuum tubes. A series of pulleys transported continuous rolls of punched paper tape containing possible solutions to a particular code. Colossus reduced the time to break Lorenz messages from weeks to hours. Most historians believe that the use of Colossus machines significantly shortened the war by providing evidence of enemy intentions and beliefs. The machine’s existence was not made public until the 1970s.

Harvard Mark 1 is completed

research paper on history of computers

Conceived by Harvard physics professor Howard Aiken, and designed and built by IBM, the Harvard Mark 1 is a room-sized, relay-based calculator. The machine had a fifty-foot long camshaft running the length of machine that synchronized the machine’s thousands of component parts and used 3,500 relays. The Mark 1 produced mathematical tables but was soon superseded by electronic stored-program computers.

John von Neumann writes First Draft of a Report on the EDVAC

research paper on history of computers

John von Neumann

In a widely circulated paper, mathematician John von Neumann outlines the architecture of a stored-program computer, including electronic storage of programming information and data -- which eliminates the need for more clumsy methods of programming such as plugboards, punched cards and paper. Hungarian-born von Neumann demonstrated prodigious expertise in hydrodynamics, ballistics, meteorology, game theory, statistics, and the use of mechanical devices for computation. After the war, he concentrated on the development of Princeton´s Institute for Advanced Studies computer.

Moore School lectures take place

research paper on history of computers

The Moore School Building at the University of Pennsylvania

An inspiring summer school on computing at the University of Pennsylvania´s Moore School of Electrical Engineering stimulates construction of stored-program computers at universities and research institutions in the US, France, the UK, and Germany. Among the lecturers were early computer designers like John von Neumann, Howard Aiken, J. Presper Eckert and John Mauchly, as well as mathematicians including Derrick Lehmer, George Stibitz, and Douglas Hartree. Students included future computing pioneers such as Maurice Wilkes, Claude Shannon, David Rees, and Jay Forrester. This free, public set of lectures inspired the EDSAC, BINAC, and, later, IAS machine clones like the AVIDAC.

Project Whirlwind begins

research paper on history of computers

Whirlwind installation at MIT

During World War II, the US Navy approaches the Massachusetts Institute of Technology (MIT) about building a flight simulator to train bomber crews. Under the leadership of MIT's Gordon Brown and Jay Forrester, the team first built a small analog simulator, but found it inaccurate and inflexible. News of the groundbreaking electronic ENIAC computer that same year inspired the group to change course and attempt a digital solution, whereby flight variables could be rapidly programmed in software. Completed in 1951, Whirlwind remains one of the most important computer projects in the history of computing. Foremost among its developments was Forrester’s perfection of magnetic core memory, which became the dominant form of high-speed random access memory for computers until the mid-1970s.

Public unveiling of ENIAC

research paper on history of computers

Started in 1943, the ENIAC computing system was built by John Mauchly and J. Presper Eckert at the Moore School of Electrical Engineering of the University of Pennsylvania. Because of its electronic, as opposed to electromechanical, technology, it is over 1,000 times faster than any previous computer. ENIAC used panel-to-panel wiring and switches for programming, occupied more than 1,000 square feet, used about 18,000 vacuum tubes and weighed 30 tons. It was believed that ENIAC had done more calculation over the ten years it was in operation than all of humanity had until that time.

First Computer Program to Run on a Computer

research paper on history of computers

Kilburn (left) and Williams in front of 'Baby'

University of Manchester researchers Frederic Williams, Tom Kilburn, and Geoff Toothill develop the Small-Scale Experimental Machine (SSEM), better known as the Manchester "Baby." The Baby was built to test a new memory technology developed by Williams and Kilburn -- soon known as the Williams Tube – which was the first high-speed electronic random access memory for computers. Their first program, consisting of seventeen instructions and written by Kilburn, ran on June 21st, 1948. This was the first program in history to run on a digital, electronic, stored-program computer.

SSEC goes on display

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IBM Selective Sequence Electronic Calculator (SSEC)

The Selective Sequence Electronic Calculator (SSEC) project, led by IBM engineer Wallace Eckert, uses both relays and vacuum tubes to process scientific data at the rate of 50 14 x 14 digit multiplications per second. Before its decommissioning in 1952, the SSEC produced the moon position tables used in early planning of the 1969 Apollo XII moon landing. These tables were later confirmed by using more modern computers for the actual flights. The SSEC was one of the last of the generation of 'super calculators' to be built using electromechanical technology.

CSIRAC runs first program

research paper on history of computers

While many early digital computers were based on similar designs, such as the IAS and its copies, others are unique designs, like the CSIRAC. Built in Sydney, Australia by the Council of Scientific and Industrial Research for use in its Radio physics Laboratory in Sydney, CSIRAC was designed by British-born Trevor Pearcey, and used unusual 12-hole paper tape. It was transferred to the Department of Physics at the University of Melbourne in 1955 and remained in service until 1964.

EDSAC completed

research paper on history of computers

The first practical stored-program computer to provide a regular computing service, EDSAC is built at Cambridge University using vacuum tubes and mercury delay lines for memory. The EDSAC project was led by Cambridge professor and director of the Cambridge Computation Laboratory, Maurice Wilkes. Wilkes' ideas grew out of the Moore School lectures he had attended three years earlier. One major advance in programming was Wilkes' use of a library of short programs, called “subroutines,” stored on punched paper tapes and used for performing common repetitive calculations within a larger program.

MADDIDA developed

research paper on history of computers

MADDIDA (Magnetic Drum Digital Differential Analyzer) prototype

MADDIDA is a digital drum-based differential analyzer. This type of computer is useful in performing many of the mathematical equations scientists and engineers encounter in their work. It was originally created for a nuclear missile design project in 1949 by a team led by Fred Steele. It used 53 vacuum tubes and hundreds of germanium diodes, with a magnetic drum for memory. Tracks on the drum did the mathematical integration. MADDIDA was flown across the country for a demonstration to John von Neumann, who was impressed. Northrop was initially reluctant to make MADDIDA a commercial product, but by the end of 1952, six had sold.

Manchester Mark I completed

research paper on history of computers

Manchester Mark I

Built by a team led by engineers Frederick Williams and Tom Kilburn, the Mark I serves as the prototype for Ferranti’s first computer – the Ferranti Mark 1. The Manchester Mark I used more than 1,300 vacuum tubes and occupied an area the size of a medium room. Its “Williams-Kilburn tube” memory system was later adopted by several other early computer systems around the world.

ERA 1101 introduced

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One of the first commercially produced computers, the company´s first customer was the US Navy. The 1101, designed by ERA but built by Remington-Rand, was intended for high-speed computing and stored 1 million bits on its magnetic drum, one of the earliest magnetic storage devices and a technology which ERA had done much to perfect in its own laboratories. Many of the 1101’s basic architectural details were used again in later Remington-Rand computers until the 1960s.

NPL Pilot ACE completed

research paper on history of computers

Based on ideas from Alan Turing, Britain´s Pilot ACE computer is constructed at the National Physical Laboratory. "We are trying to build a machine to do all kinds of different things simply by programming rather than by the addition of extra apparatus," Turing said at a symposium on large-scale digital calculating machinery in 1947 in Cambridge, Massachusetts. The design packed 800 vacuum tubes into a relatively compact 12 square feet.

Plans to build the Simon 1 relay logic machine are published

research paper on history of computers

Simon featured on the November 1950 Scientific American cover

The hobbyist magazine Radio Electronics publishes Edmund Berkeley's design for the Simon 1 relay computer from 1950 to 1951. The Simon 1 used relay logic and cost about $600 to build. In his book Giant Brains , Berkeley noted - “We shall now consider how we can design a very simple machine that will think. Let us call it Simon, because of its predecessor, Simple Simon... Simon is so simple and so small in fact that it could be built to fill up less space than a grocery-store box; about four cubic feet.”

SEAC and SWAC completed

research paper on history of computers

The Standards Eastern Automatic Computer (SEAC) is among the first stored program computers completed in the United States. It was built in Washington DC as a test-bed for evaluating components and systems as well as for setting computer standards. It was also one of the first computers to use all-diode logic, a technology more reliable than vacuum tubes. The world's first scanned image was made on SEAC by engineer Russell Kirsch in 1957.

The NBS also built the Standards Western Automatic Computer (SWAC) at the Institute for Numerical Analysis on the UCLA campus. Rather than testing components like the SEAC, the SWAC was built using already-developed technology. SWAC was used to solve problems in numerical analysis, including developing climate models and discovering five previously unknown Mersenne prime numbers.

Ferranti Mark I sold

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Ferranti Mark 1

The title of “first commercially available general-purpose computer” probably goes to Britain’s Ferranti Mark I for its sale of its first Mark I computer to Manchester University. The Mark 1 was a refinement of the experimental Manchester “Baby” and Manchester Mark 1 computers, also at Manchester University. A British government contract spurred its initial development but a change in government led to loss of funding and the second and only other Mark I was sold at a major loss to the University of Toronto, where it was re-christened FERUT.

First Univac 1 delivered to US Census Bureau

research paper on history of computers

Univac 1 installation

The Univac 1 is the first commercial computer to attract widespread public attention. Although manufactured by Remington Rand, the machine was often mistakenly referred to as “the IBM Univac." Univac computers were used in many different applications but utilities, insurance companies and the US military were major customers. One biblical scholar even used a Univac 1 to compile a concordance to the King James version of the Bible. Created by Presper Eckert and John Mauchly -- designers of the earlier ENIAC computer -- the Univac 1 used 5,200 vacuum tubes and weighed 29,000 pounds. Remington Rand eventually sold 46 Univac 1s at more than $1 million each.

J. Lyons & Company introduce LEO-1

research paper on history of computers

Modeled after the Cambridge University EDSAC computer, the president of Lyons Tea Co. has the LEO built to solve the problem of production scheduling and delivery of cakes to the hundreds of Lyons tea shops around England. After the success of the first LEO, Lyons went into business manufacturing computers to meet the growing need for data processing systems in business. The LEO was England’s first commercial computer and was performing useful work before any other commercial computer system in the world.

IAS computer operational

research paper on history of computers

MANIAC at Los Alamos

The Institute of Advanced Study (IAS) computer is a multi-year research project conducted under the overall supervision of world-famous mathematician John von Neumann. The notion of storing both data and instructions in memory became known as the ‘stored program concept’ to distinguish it from earlier methods of instructing a computer. The IAS computer was designed for scientific calculations and it performed essential work for the US atomic weapons program. Over the next few years, the basic design of the IAS machine was copied in at least 17 places and given similar-sounding names, for example, the MANIAC at Los Alamos Scientific Laboratory; the ILLIAC at the University of Illinois; the Johnniac at The Rand Corporation; and the SILLIAC in Australia.

Grimsdale and Webb build early transistorized computer

research paper on history of computers

Manchester transistorized computer

Working under Tom Kilburn at England’s Manchester University, Richard Grimsdale and Douglas Webb demonstrate a prototype transistorized computer, the "Manchester TC", on November 16, 1953. The 48-bit machine used 92 point-contact transistors and 550 diodes.

IBM ships its Model 701 Electronic Data Processing Machine

research paper on history of computers

Cuthbert Hurd (standing) and Thomas Watson, Sr. at IBM 701 console

During three years of production, IBM sells 19 701s to research laboratories, aircraft companies, and the federal government. Also known inside IBM as the “Defense Calculator," the 701 rented for $15,000 a month. Programmer Arthur Samuels used the 701 to write the first computer program designed to play checkers. The 701 introduction also marked the beginning of IBM’s entry into the large-scale computer market, a market it came to dominate in later decades.

RAND Corporation completes Johnniac computer

research paper on history of computers

RAND Corporation’s Johnniac

The Johnniac computer is one of 17 computers that followed the basic design of Princeton's Institute of Advanced Study (IAS) computer. It was named after John von Neumann, a world famous mathematician and computer pioneer of the day. Johnniac was used for scientific and engineering calculations. It was also repeatedly expanded and improved throughout its 13-year lifespan. Many innovative programs were created for Johnniac, including the time-sharing system JOSS that allowed many users to simultaneously access the machine.

IBM 650 magnetic drum calculator introduced

research paper on history of computers

IBM establishes the 650 as its first mass-produced computer, with the company selling 450 in just one year. Spinning at 12,500 rpm, the 650´s magnetic data-storage drum allowed much faster access to stored information than other drum-based machines. The Model 650 was also highly popular in universities, where a generation of students first learned programming.

English Electric DEUCE introduced

research paper on history of computers

English Electric DEUCE

A commercial version of Alan Turing's Pilot ACE, called DEUCE—the Digital Electronic Universal Computing Engine -- is used mostly for science and engineering problems and a few commercial applications. Over 30 were completed, including one delivered to Australia.

Direct keyboard input to computers

research paper on history of computers

Joe Thompson at Whirlwind console, ca. 1951

At MIT, researchers begin experimenting with direct keyboard input to computers, a precursor to today´s normal mode of operation. Typically, computer users of the time fed their programs into a computer using punched cards or paper tape. Doug Ross wrote a memo advocating direct access in February. Ross contended that a Flexowriter -- an electrically-controlled typewriter -- connected to an MIT computer could function as a keyboard input device due to its low cost and flexibility. An experiment conducted five months later on the MIT Whirlwind computer confirmed how useful and convenient a keyboard input device could be.

Librascope LGP-30 introduced

research paper on history of computers

Physicist Stan Frankel, intrigued by small, general-purpose computers, developed the MINAC at Caltech. The Librascope division of defense contractor General Precision buys Frankel’s design, renaming it the LGP-30 in 1956. Used for science and engineering as well as simple data processing, the LGP-30 was a “bargain” at less than $50,000 and an early example of a ‘personal computer,’ that is, a computer made for a single user.

MIT researchers build the TX-0

research paper on history of computers

TX-0 at MIT

The TX-0 (“Transistor eXperimental - 0”) is the first general-purpose programmable computer built with transistors. For easy replacement, designers placed each transistor circuit inside a "bottle," similar to a vacuum tube. Constructed at MIT´s Lincoln Laboratory, the TX-0 moved to the MIT Research Laboratory of Electronics, where it hosted some early imaginative tests of programming, including writing a Western movie shown on television, 3-D tic-tac-toe, and a maze in which a mouse found martinis and became increasingly inebriated.

Digital Equipment Corporation (DEC) founded

research paper on history of computers

The Maynard mill

DEC is founded initially to make electronic modules for test, measurement, prototyping and control markets. Its founders were Ken and Stan Olsen, and Harlan Anderson. Headquartered in Maynard, Massachusetts, Digital Equipment Corporation, took over 8,680 square foot leased space in a nineteenth century mill that once produced blankets and uniforms for soldiers who fought in the Civil War. General Georges Doriot and his pioneering venture capital firm, American Research and Development, invested $70,000 for 70% of DEC’s stock to launch the company in 1957. The mill is still in use today as an office park (Clock Tower Place) today.

RCA introduces its Model 501 transistorized computer

research paper on history of computers

RCA 501 brochure cover

The 501 is built on a 'building block' concept which allows it to be highly flexible for many different uses and could simultaneously control up to 63 tape drives—very useful for large databases of information. For many business users, quick access to this huge storage capability outweighed its relatively slow processing speed. Customers included US military as well as industry.

SAGE system goes online

research paper on history of computers

SAGE Operator Station

The first large-scale computer communications network, SAGE connects 23 hardened computer sites in the US and Canada. Its task was to detect incoming Soviet bombers and direct interceptor aircraft to destroy them. Operators directed actions by touching a light gun to the SAGE airspace display. The air defense system used two AN/FSQ-7 computers, each of which used a full megawatt of power to drive its 55,000 vacuum tubes, 175,000 diodes and 13,000 transistors.

DEC PDP-1 introduced

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Ed Fredkin at DEC PDP-1

The typical PDP-1 computer system, which sells for about $120,000, includes a cathode ray tube graphic display, paper tape input/output, needs no air conditioning and requires only one operator; all of which become standards for minicomputers. Its large scope intrigued early hackers at MIT, who wrote the first computerized video game, SpaceWar! , as well as programs to play music. More than 50 PDP-1s were sold.

NEAC 2203 goes online

research paper on history of computers

NEAC 2203 transistorized computer

An early transistorized computer, the NEAC (Nippon Electric Automatic Computer) includes a CPU, console, paper tape reader and punch, printer and magnetic tape units. It was sold exclusively in Japan, but could process alphabetic and Japanese kana characters. Only about thirty NEACs were sold. It managed Japan's first on-line, real-time reservation system for Kinki Nippon Railways in 1960. The last one was decommissioned in 1979.

IBM 7030 (“Stretch”) completed

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IBM Stretch

IBM´s 7000 series of mainframe computers are the company´s first to use transistors. At the top of the line was the Model 7030, also known as "Stretch." Nine of the computers, which featured dozens of advanced design innovations, were sold, mainly to national laboratories and major scientific users. A special version, known as HARVEST, was developed for the US National Security Agency (NSA). The knowledge and technologies developed for the Stretch project played a major role in the design, management, and manufacture of the later IBM System/360--the most successful computer family in IBM history.

IBM Introduces 1400 series

research paper on history of computers

The 1401 mainframe, the first in the series, replaces earlier vacuum tube technology with smaller, more reliable transistors. Demand called for more than 12,000 of the 1401 computers, and the machine´s success made a strong case for using general-purpose computers rather than specialized systems. By the mid-1960s, nearly half of all computers in the world were IBM 1401s.

Minuteman I missile guidance computer developed

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Minuteman Guidance computer

Minuteman missiles use transistorized computers to continuously calculate their position in flight. The computer had to be rugged and fast, with advanced circuit design and reliable packaging able to withstand the forces of a missile launch. The military’s high standards for its transistors pushed manufacturers to improve quality control. When the Minuteman I was decommissioned, some universities received these computers for use by students.

Naval Tactical Data System introduced

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Naval Tactical Data System (NTDS)

The US Navy Tactical Data System uses computers to integrate and display shipboard radar, sonar and communications data. This real-time information system began operating in the early 1960s. In October 1961, the Navy tested the NTDS on the USS Oriskany carrier and the USS King and USS Mahan frigates. After being successfully used for decades, NTDS was phased out in favor of the newer AEGIS system in the 1980s.

MIT LINC introduced

research paper on history of computers

Wesley Clark with LINC

The LINC is an early and important example of a ‘personal computer,’ that is, a computer designed for only one user. It was designed by MIT Lincoln Laboratory engineer Wesley Clark. Under the auspices of a National Institutes of Health (NIH) grant, biomedical research faculty from around the United States came to a workshop at MIT to build their own LINCs, and then bring them back to their home institutions where they would be used. For research, Digital Equipment Corporation (DEC) supplied the components, and 50 original LINCs were made. The LINC was later commercialized by DEC and sold as the LINC-8.

The Atlas Computer debuts

research paper on history of computers

Chilton Atlas installation

A joint project of England’s Manchester University, Ferranti Computers, and Plessey, Atlas comes online nine years after Manchester’s computer lab begins exploring transistor technology. Atlas was the fastest computer in the world at the time and introduced the concept of “virtual memory,” that is, using a disk or drum as an extension of main memory. System control was provided through the Atlas Supervisor, which some consider to be the first true operating system.

CDC 6600 supercomputer introduced

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The Control Data Corporation (CDC) 6600 performs up to 3 million instructions per second —three times faster than that of its closest competitor, the IBM 7030 supercomputer. The 6600 retained the distinction of being the fastest computer in the world until surpassed by its successor, the CDC 7600, in 1968. Part of the speed came from the computer´s design, which used 10 small computers, known as peripheral processing units, to offload the workload from the central processor.

Digital Equipment Corporation introduces the PDP-8

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PDP-8 advertisement

The Canadian Chalk River Nuclear Lab needed a special device to monitor a reactor. Instead of designing a custom controller, two young engineers from Digital Equipment Corporation (DEC) -- Gordon Bell and Edson de Castro -- do something unusual: they develop a small, general purpose computer and program it to do the job. A later version of that machine became the PDP-8, the first commercially successful minicomputer. The PDP-8 sold for $18,000, one-fifth the price of a small IBM System/360 mainframe. Because of its speed, small size, and reasonable cost, the PDP-8 was sold by the thousands to manufacturing plants, small businesses, and scientific laboratories around the world.

IBM announces System/360

research paper on history of computers

IBM 360 Model 40

System/360 is a major event in the history of computing. On April 7, IBM announced five models of System/360, spanning a 50-to-1 performance range. At the same press conference, IBM also announced 40 completely new peripherals for the new family. System/360 was aimed at both business and scientific customers and all models could run the same software, largely without modification. IBM’s initial investment of $5 billion was quickly returned as orders for the system climbed to 1,000 per month within two years. At the time IBM released the System/360, the company had just made the transition from discrete transistors to integrated circuits, and its major source of revenue began to move from punched card equipment to electronic computer systems.

SABRE comes on-line

research paper on history of computers

Airline reservation agents working with SABRE

SABRE is a joint project between American Airlines and IBM. Operational by 1964, it was not the first computerized reservation system, but it was well publicized and became very influential. Running on dual IBM 7090 mainframe computer systems, SABRE was inspired by IBM’s earlier work on the SAGE air-defense system. Eventually, SABRE expanded, even making airline reservations available via on-line services such as CompuServe, Genie, and America Online.

Teletype introduced its ASR-33 Teletype

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Student using ASR-33

At a cost to computer makers of roughly $700, the ASR-33 Teletype is originally designed as a low cost terminal for the Western Union communications network. Throughout the 1960s and ‘70s, the ASR-33 was a popular and inexpensive choice of input and output device for minicomputers and many of the first generation of microcomputers.

3C DDP-116 introduced

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DDP-116 General Purpose Computer

Designed by engineer Gardner Hendrie for Computer Control Corporation (CCC), the DDP-116 is announced at the 1965 Spring Joint Computer Conference. It was the world's first commercial 16-bit minicomputer and 172 systems were sold. The basic computer cost $28,500.

Olivetti Programma 101 is released

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Olivetti Programma 101

Announced the year previously at the New York World's Fair the Programma 101 goes on sale. This printing programmable calculator was made from discrete transistors and an acoustic delay-line memory. The Programma 101 could do addition, subtraction, multiplication, and division, as well as calculate square roots. 40,000 were sold, including 10 to NASA for use on the Apollo space project.

HP introduces the HP 2116A

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HP 2116A system

The 2116A is HP’s first computer. It was developed as a versatile instrument controller for HP's growing family of programmable test and measurement products. It interfaced with a wide number of standard laboratory instruments, allowing customers to computerize their instrument systems. The 2116A also marked HP's first use of integrated circuits in a commercial product.

ILLIAC IV project begins

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A large parallel processing computer, the ILLIAC IV does not operate until 1972. It was eventually housed at NASA´s Ames Research Center in Mountain View, California. The most ambitious massively parallel computer at the time, the ILLIAC IV was plagued with design and production problems. Once finally completed, it achieved a computational speed of 200 million instructions per second and 1 billion bits per second of I/O transfer via a unique combination of its parallel architecture and the overlapping or "pipelining" structure of its 64 processing elements.

RCA announces its Spectra series of computers

research paper on history of computers

Image from RCA Spectra-70 brochure

The first large commercial computers to use integrated circuits, RCA highlights the IC's advantage over IBM’s custom SLT modules. Spectra systems were marketed on the basis of their compatibility with the IBM System/360 series of computer since it implemented the IBM 360 instruction set and could run most IBM software with little or no modification.

Apollo Guidance Computer (AGC) makes its debut

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DSKY interface for the Apollo Guidance Computer

Designed by scientists and engineers at MIT’s Instrumentation Laboratory, the Apollo Guidance Computer (AGC) is the culmination of years of work to reduce the size of the Apollo spacecraft computer from the size of seven refrigerators side-by-side to a compact unit weighing only 70 lbs. and taking up a volume of less than 1 cubic foot. The AGC’s first flight was on Apollo 7. A year later, it steered Apollo 11 to the lunar surface. Astronauts communicated with the computer by punching two-digit codes into the display and keyboard unit (DSKY). The AGC was one of the earliest uses of integrated circuits, and used core memory, as well as read-only magnetic rope memory. The astronauts were responsible for entering more than 10,000 commands into the AGC for each trip between Earth and the Moon.

Data General Corporation introduces the Nova Minicomputer

research paper on history of computers

Edson deCastro with a Data General Nova

Started by a group of engineers that left Digital Equipment Corporation (DEC), Data General designs the Nova minicomputer. It had 32 KB of memory and sold for $8,000. Ed de Castro, its main designer and co-founder of Data General, had earlier led the team that created the DEC PDP-8. The Nova line of computers continued through the 1970s, and influenced later systems like the Xerox Alto and Apple 1.

Amdahl Corporation introduces the Amdahl 470

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Gene Amdahl with 470V/6 model

Gene Amdahl, father of the IBM System/360, starts his own company, Amdahl Corporation, to compete with IBM in mainframe computer systems. The 470V/6 was the company’s first product and ran the same software as IBM System/370 computers but cost less and was smaller and faster.

First Kenbak-1 is sold

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One of the earliest personal computers, the Kenbak-1 is advertised for $750 in Scientific American magazine. Designed by John V. Blankenbaker using standard medium-- and small-scale integrated circuits, the Kenbak-1 relied on switches for input and lights for output from its 256-byte memory. In 1973, after selling only 40 machines, Kenbak Corporation closed its doors.

Hewlett-Packard introduces the HP-35

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HP-35 handheld calculator

Initially designed for internal use by HP employees, co-founder Bill Hewlett issues a challenge to his engineers in 1971: fit all of the features of their desktop scientific calculator into a package small enough for his shirt pocket. They did. Marketed as “a fast, extremely accurate electronic slide rule” with a solid-state memory similar to that of a computer, the HP-35 distinguished itself from its competitors by its ability to perform a broad variety of logarithmic and trigonometric functions, to store more intermediate solutions for later use, and to accept and display entries in a form similar to standard scientific notation. The HP-35 helped HP become one of the most dominant companies in the handheld calculator market for more than two decades.

Intel introduces the first microprocessor

research paper on history of computers

Advertisement for Intel's 4004

Computer History Museum

The first advertisement for a microprocessor, the Intel 4004, appears in Electronic News. Developed for Busicom, a Japanese calculator maker, the 4004 had 2250 transistors and could perform up to 90,000 operations per second in four-bit chunks. Federico Faggin led the design and Ted Hoff led the architecture.

Laser printer invented at Xerox PARC

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Dover laser printer

Xerox PARC physicist Gary Starkweather realizes in 1967 that exposing a copy machine’s light-sensitive drum to a paper original isn’t the only way to create an image. A computer could “write” it with a laser instead. Xerox wasn’t interested. So in 1971, Starkweather transferred to Xerox Palo Alto Research Center (PARC), away from corporate oversight. Within a year, he had built the world’s first laser printer, launching a new era in computer printing, generating billions of dollars in revenue for Xerox. The laser printer was used with PARC’s Alto computer, and was commercialized as the Xerox 9700.

IBM SCAMP is developed

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Dr. Paul Friedl with SCAMP prototype

Under the direction of engineer Dr. Paul Friedl, the Special Computer APL Machine Portable (SCAMP) personal computer prototype is developed at IBM's Los Gatos and Palo Alto, California laboratories. IBM’s first personal computer, the system was designed to run the APL programming language in a compact, briefcase-like enclosure which comprised a keyboard, CRT display, and cassette tape storage. Friedl used the SCAMP prototype to gain approval within IBM to promote and develop IBM’s 5100 family of computers, including the most successful, the 5150, also known as the IBM Personal Computer (PC), introduced in 1981. From concept to finished system, SCAMP took only six months to develop.

Micral is released

research paper on history of computers

Based on the Intel 8008 microprocessor, the Micral is one of the earliest commercial, non-kit personal computers. Designer Thi Truong developed the computer while Philippe Kahn wrote the software. Truong, founder and president of the French company R2E, created the Micral as a replacement for minicomputers in situations that did not require high performance, such as process control and highway toll collection. Selling for $1,750, the Micral never penetrated the U.S. market. In 1979, Truong sold R2E to Bull.

The TV Typewriter plans are published

research paper on history of computers

TV Typewriter

Designed by Don Lancaster, the TV Typewriter is an easy-to-build kit that can display alphanumeric information on an ordinary television set. It used $120 worth of electronics components, as outlined in the September 1973 issue of hobbyist magazine Radio Electronics . The original design included two memory boards and could generate and store 512 characters as 16 lines of 32 characters. A cassette tape interface provided supplementary storage for text. The TV Typewriter was used by many small television stations well in the 1990s.

Wang Laboratories releases the Wang 2200

research paper on history of computers

Wang was a successful calculator manufacturer, then a successful word processor company. The 1973 Wang 2200 makes it a successful computer company, too. Wang sold the 2200 primarily through Value Added Resellers, who added special software to solve specific customer problems. The 2200 used a built-in CRT, cassette tape for storage, and ran the programming language BASIC. The PC era ended Wang’s success, and it filed for bankruptcy in 1992.

Scelbi advertises its 8H computer

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The first commercially advertised US computer based on a microprocessor (the Intel 8008,) the Scelbi has 4 KB of internal memory and a cassette tape interface, as well as Teletype and oscilloscope interfaces. Scelbi aimed the 8H, available both in kit form and fully assembled, at scientific, electronic, and biological applications. In 1975, Scelbi introduced the 8B version with 16 KB of memory for the business market. The company sold about 200 machines, losing $500 per unit.

The Mark-8 appears in the pages of Radio-Electronics

research paper on history of computers

Mark-8 featured on Radio-Electronics July 1974 cover

The Mark-8 “Do-It-Yourself” kit is designed by graduate student John Titus and uses the Intel 8008 microprocessor. The kit was the cover story of hobbyist magazine Radio-Electronics in July 1974 – six months before the MITS Altair 8800 was in rival Popular Electronics magazine. Plans for the Mark-8 cost $5 and the blank circuit boards were available for $50.

Xerox PARC Alto introduced

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The Alto is a groundbreaking computer with wide influence on the computer industry. It was based on a graphical user interface using windows, icons, and a mouse, and worked together with other Altos over a local area network. It could also share files and print out documents on an advanced Xerox laser printer. Applications were also highly innovative: a WYSISYG word processor known as “Bravo,” a paint program, a graphics editor, and email for example. Apple’s inspiration for the Lisa and Macintosh computers came from the Xerox Alto.

MITS Altair 8800 kit appears in Popular Electronics

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Altair 8800

For its January issue, hobbyist magazine Popular Electronics runs a cover story of a new computer kit – the Altair 8800. Within weeks of its appearance, customers inundated its maker, MITS, with orders. Bill Gates and Paul Allen licensed their BASIC programming language interpreter to MITS as the main language for the Altair. MITS co-founder Ed Roberts invented the Altair 8800 — which sold for $297, or $395 with a case — and coined the term “personal computer”. The machine came with 256 bytes of memory (expandable to 64 KB) and an open 100-line bus structure that evolved into the “S-100” standard widely used in hobbyist and personal computers of this era. In 1977, MITS was sold to Pertec, which continued producing Altairs in 1978.

MOS 6502 is introduced

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MOS 6502 ad from IEEE Computer, Sept. 1975

Chuck Peddle leads a small team of former Motorola employees to build a low-cost microprocessor. The MOS 6502 was introduced at a conference in San Francisco at a cost of $25, far less than comparable processors from Intel and Motorola, leading some attendees to believe that the company was perpetrating a hoax. The chip quickly became popular with designers of early personal computers like the Apple II and Commodore PET, as well as game consoles like the Nintendo Entertainment System. The 6502 and its progeny are still used today, usually in embedded applications.

Southwest Technical Products introduces the SWTPC 6800

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Southwest Technical Products 6800

Southwest Technical Products is founded by Daniel Meyer as DEMCO in the 1960s to provide a source for kit versions of projects published in electronics hobbyist magazines. SWTPC introduces many computer kits based on the Motorola 6800, and later, the 6809. Of the dozens of different SWTP kits available, the 6800 proved the most popular.

Tandem Computers releases the Tandem-16

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Dual-processor Tandem 16 system

Tailored for online transaction processing, the Tandem-16 is one of the first commercial fault-tolerant computers. The banking industry rushed to adopt the machine, built to run during repair or expansion. The Tandem-16 eventually led to the “Non-Stop” series of systems, which were used for early ATMs and to monitor stock trades.

The Video Display Module (VDM-1)

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The Video Display Module (VDM)

Designed by computer pioneer Lee Felsenstein, the Video Display Module (VDM-1) marks the earliest implementation of a memory-mapped alphanumeric video display for personal computers. Introduced at the Altair Convention in Albuquerque in March 1976, it was a much-needed input device for hobbyists building their own microcomputer systems at the time and became the basis of the SOL-20 computer.

Cray-1 supercomputer introduced

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Cray I 'Self-portrait'

The fastest machine of its day, The Cray-1's speed comes partly from its shape, a "C," which reduces the length of wires and thus the time signals need to travel across them. High packaging density of integrated circuits and a novel Freon cooling system also contributed to its speed. Each Cray-1 took a full year to assemble and test and cost about $10 million. Typical applications included US national defense work, including the design and simulation of nuclear weapons, and weather forecasting.

Intel 8080 and Zilog Z-80

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Zilgo Z-80 microprocessor

Image by Gennadiy Shvets

Intel and Zilog introduced new microprocessors. Five times faster than its predecessor, the 8008, the Intel 8080 could address four times as many bytes for a total of 64 kilobytes. The Zilog Z-80 could run any program written for the 8080 and included twice as many built-in machine instructions.

Steve Wozniak completes the Apple-1

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Designed by Sunnyvale, California native Steve Wozniak, and marketed by his friend Steve Jobs, the Apple-1 is a single-board computer for hobbyists. With an order for 50 assembled systems from Mountain View, California computer store The Byte Shop in hand, the pair started a new company, naming it Apple Computer, Inc. In all, about 200 of the boards were sold before Apple announced the follow-on Apple II a year later as a ready-to-use computer for consumers, a model which sold in the millions for nearly two decades.

Apple II introduced

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Sold complete with a main logic board, switching power supply, keyboard, case, manual, game paddles, and cassette tape containing the game Breakout , the Apple-II finds popularity far beyond the hobbyist community which made up Apple’s user community until then. When connected to a color television set, the Apple II produced brilliant color graphics for the time. Millions of Apple IIs were sold between 1977 and 1993, making it one of the longest-lived lines of personal computers. Apple gave away thousands of Apple IIs to school, giving a new generation their first access to personal computers.

Tandy Radio Shack introduces its TRS-80

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Performing far better than the company projections of 3,000 units for the first year, in the first month after its release Tandy Radio Shack´s first desktop computer — the TRS-80 — sells 10,000 units. The TRS-80 was priced at $599.95, included a Z80 microprocessor, video display, 4 KB of memory, a built-in BASIC programming language interpreter, cassette storage, and easy-to-understand manuals that assumed no prior knowledge on the part of the user. The TRS-80 proved popular with schools, as well as for home use. The TRS-80 line of computers later included color, portable, and handheld versions before being discontinued in the early 1990s.

The Commodore PET (Personal Electronic Transactor) introduced

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Commodore PET

The first of several personal computers released in 1977, the PET comes fully assembled with either 4 or 8 KB of memory, a built-in cassette tape drive, and a membrane keyboard. The PET was popular with schools and for use as a home computer. It used a MOS Technologies 6502 microprocessor running at 1 MHz. After the success of the PET, Commodore remained a major player in the personal computer market into the 1990s.

The DEC VAX introduced

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DEC VAX 11/780

Beginning with the VAX-11/780, the Digital Equipment Corporation (DEC) VAX family of computers rivals much more expensive mainframe computers in performance and features the ability to address over 4 GB of virtual memory, hundreds of times the capacity of most minicomputers. Called a “complex instruction set computer,” VAX systems were backward compatible and so preserved the investment owners of previous DEC computers had in software. The success of the VAX family of computers transformed DEC into the second-largest computer company in the world, as VAX systems became the de facto standard computing system for industry, the sciences, engineering, and research.

Atari introduces its Model 400 and 800 computers

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Early Atari 400/800 advertisement

Shortly after delivery of the Atari VCS game console, Atari designs two microcomputers with game capabilities: the Model 400 and Model 800. The 400 served primarily as a game console, while the 800 was more of a home computer. Both faced strong competition from the Apple II, Commodore PET, and TRS-80 computers. Atari's 8-bit computers were influential in the arts, especially in the emerging DemoScene culture of the 1980s and '90s.

Motorola introduces the 68000 microprocessor

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Die shot of Motorola 68000

Image by Pauli Rautakorpi

The Motorola 68000 microprocessor exhibited a processing speed far greater than its contemporaries. This high performance processor found its place in powerful work stations intended for graphics-intensive programs common in engineering.

Texas Instruments TI 99/4 is released

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Texas Instruments TI 99/4 microcomputer

Based around the Texas Instruments TMS 9900 microprocessor running at 3 MHz, the TI 99/4 has one of the fastest CPUs available in a home computer. The TI99/4 had a wide variety of expansion boards, with an especially popular speech synthesis system that could also be used with TI's Speak & Spell educational game. The TI 99/4 sold well and led to a series of TI follow-on machines.

Commodore introduces the VIC-20

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Commodore VIC-20

Commodore releases the VIC-20 home computer as the successor to the Commodore PET personal computer. Intended to be a less expensive alternative to the PET, the VIC-20 was highly successful, becoming the first computer to sell more than a million units. Commodore even used Star Trek television star William Shatner in advertisements.

The Sinclair ZX80 introduced

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Sinclair ZX80

This very small home computer is available in the UK as a kit for £79 or pre-assembled for £99. Inside was a Z80 microprocessor and a built-in BASIC language interpreter. Output was displayed on the user’s home TV screen through use of an adapter. About 50,000 were sold in Britain, primarily to hobbyists, and initially there was a long waiting list for the system.

The Computer Programme debuts on the BBC

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Title card- BBC’s The Computer Programme

The British Broadcasting Corporation’s Computer Literacy Project hoped “to introduce interested adults to the world of computers.” Acorn produces a popular computer, the BBC Microcomputer System, so viewers at home could follow along on their own home computers as they watched the program. The machine was expandable, with ports for cassette storage, serial interface and rudimentary networking. A large amount of software was created for the “BBC Micro,” including educational, productivity, and game programs.

Apollo Computer unveils its first workstation, its DN100

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Apollo DN100

The DN100 is based on the Motorola 68000 microprocessor, high-resolution display and built-in networking - the three basic features of all workstations. Apollo and its main competitor, Sun Microsystems, optimized their machines to run the computer-intensive graphics programs common in engineering and scientific applications. Apollo was a leading innovator in the workstation field for more than a decade, and was acquired by Hewlett-Packard in 1989.

IBM introduces its Personal Computer (PC)

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IBM's brand recognition, along with a massive marketing campaign, ignites the fast growth of the personal computer market with the announcement of its own personal computer (PC). The first IBM PC, formally known as the IBM Model 5150, was based on a 4.77 MHz Intel 8088 microprocessor and used Microsoft´s MS-DOS operating system. The IBM PC revolutionized business computing by becoming the first PC to gain widespread adoption by industry. The IBM PC was widely copied (“cloned”) and led to the creation of a vast “ecosystem” of software, peripherals, and other commodities for use with the platform.

Osborne 1 introduced

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Weighing 24 pounds and costing $1,795, the Osborne 1 is the first mass-produced portable computer. Its price was especially attractive as the computer included very useful productivity software worth about $1,500 alone. It featured a 5-inch display, 64 KB of memory, a modem, and two 5.25-inch floppy disk drives.

Commodore introduces the Commodore 64

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Commodore 64 system

The C64, as it is better known, sells for $595, comes with 64 KB of RAM and features impressive graphics. Thousands of software titles were released over the lifespan of the C64 and by the time it was discontinued in 1993, it had sold more than 22 million units. It is recognized by the 2006 Guinness Book of World Records as the greatest selling single computer of all time.

Franklin releases Apple II “clones”

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Franklin Ace 100 microcomputer

Created almost five years after the original Apple II, Franklin's Ace 1000 main logic board is nearly identical to that in the Apple II+ computer, and other models were later cloned as well. Franklin was able to undercut Apple's pricing even while offering some features not available on the original. Initially, Franklin won a court victory allowing them to continue cloning the machines, but in 1988, Apple won a copyright lawsuit against Franklin, forcing them to stop making Apple II “clones.”

Sun Microsystems is founded

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Sun-1 workstation

When Xerox PARC loaned the Stanford Engineering Department an entire Alto Ethernet network with laser printer, graduate student Andy Bechtolsheim re-designed it into a prototype that he then attached to Stanford’s computer network. Sun Microsystems grows out of this prototype. The roots of the company’s name came from the acronym for Stanford University Network (SUN). The company was incorporated by three 26-year-old Stanford alumni: Bechtolsheim, Vinod Khosla and Scott McNealy. The trio soon attracted UC Berkeley UNIX guru Bill Joy, who led software development. Sun helped cement the model of a workstation having an Ethernet interface as well as high-resolution graphics and the UNIX operating system.

Apple introduces the Lisa computer

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Lisa is the first commercial personal computer with a graphical user interface (GUI). It was thus an important milestone in computing as soon Microsoft Windows and the Apple Macintosh would soon adopt the GUI as their user interface, making it the new paradigm for personal computing. The Lisa ran on a Motorola 68000 microprocessor and came equipped with 1 MB of RAM, a 12-inch black-and-white monitor, dual 5.25-inch floppy disk drives and a 5 MB “Profile” hard drive. Lisa itself, and especially its GUI, were inspired by earlier work at the Xerox Palo Alto Research Center.

Compaq Computer Corporation introduces the Compaq Portable

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Compaq Portable

Advertised as the first 100% IBM PC-compatible computer, the Compaq Portable can run the same software as the IBM PC. With the success of the clone, Compaq recorded first-year sales of $111 million, the most ever by an American business in a single year. The success of the Portable inspired many other early IBM-compatible computers. Compaq licensed the MS-DOS operating system from Microsoft and legally reverse-engineered IBM’s BIOS software. Compaq's success launched a market for IBM-compatible computers that by 1996 had achieved an 83-percent share of the personal computer market.

Apple Computer launches the Macintosh

research paper on history of computers

Apple Macintosh

Apple introduces the Macintosh with a television commercial during the 1984 Super Bowl, which plays on the theme of totalitarianism in George Orwell´s book 1984 . The ad featured the destruction of “Big Brother” – a veiled reference to IBM -- through the power of personal computing found in a Macintosh. The Macintosh was the first successful mouse-driven computer with a graphical user interface and was based on the Motorola 68000 microprocessor. Its price was $2,500. Applications that came as part of the package included MacPaint, which made use of the mouse, and MacWrite, which demonstrated WYSIWYG (What You See Is What You Get) word processing.

IBM releases its PC Jr. and PC/AT

research paper on history of computers

The PC Jr. is marketed as a home computer but is too expensive and limited in performance to compete with many of the other machines in that market. It’s “chiclet” keyboard was also criticized for poor ergonomics. While the PC Jr. sold poorly, the PC/AT sold in the millions. It offered increased performance and storage capacity over the original IBM PC and sold for about $4,000. It also included more memory and accommodated high-density 1.2-megabyte 5 1/4-inch floppy disks.

PC's Limited is founded

research paper on history of computers

PC’s Limited founder Michael Dell

In 1984, Michael Dell creates PC's Limited while still a student of the University of Texas at Austin. The dorm-room headquartered company sold IBM PC-compatible computers built from stock components. Dell dropped out of school to focus on his business and in 1985, the company produced the first computer of its own design, the Turbo PC, which sold for $795. By the early 1990s, Dell became one of the leading computer retailers.

The Amiga 1000 is released

research paper on history of computers

Music composition on the Amiga 1000

Commodore’s Amiga 1000 is announced with a major event at New York's Lincoln Center featuring celebrities like Andy Warhol and Debbie Harry of the musical group Blondie. The Amiga sold for $1,295 (without monitor) and had audio and video capabilities beyond those found in most other personal computers. It developed a very loyal following while add-on components allowed it to be upgraded easily. The inside of the Amiga case is engraved with the signatures of the Amiga designers, including Jay Miner as well as the paw print of his dog Mitchy.

Compaq introduces the Deskpro 386 system

research paper on history of computers

Promotional shot of the Compaq Deskpro 386s,

Compaq beats IBM to the market when it announces the Deskpro 386, the first computer on the market to use Intel´s new 80386 chip, a 32-bit microprocessor with 275,000 transistors on each chip. At 4 million operations per second and 4 kilobytes of memory, the 80386 gave PCs as much speed and power as older mainframes and minicomputers.

The 386 chip brought with it the introduction of a 32-bit architecture, a significant improvement over the 16-bit architecture of previous microprocessors. It had two operating modes, one that mirrored the segmented memory of older x86 chips, allowing full backward compatibility, and one that took full advantage of its more advanced technology. The new chip made graphical operating environments for IBM PC and PC-compatible computers practical. The architecture that allowed Windows and IBM OS/2 has remained in subsequent chips.

IBM releases the first commercial RISC-based workstation

research paper on history of computers

Reduced instruction set computers (RISC) grow out of the observation that the simplest 20 percent of a computer´s instruction set does 80 percent of the work. The IBM PC-RT had 1 MB of RAM, a 1.2-megabyte floppy disk drive, and a 40 MB hard drive. It performed 2 million instructions per second, but other RISC-based computers worked significantly faster.

The Connection Machine is unveiled

research paper on history of computers

Connection Machine CM-1

Daniel Hillis of Thinking Machines Corporation moves artificial intelligence a step forward when he develops the controversial concept of massive parallelism in the Connection Machine CM-1. The machine used up to 65,536 one-bit processors and could complete several billion operations per second. Each processor had its own small memory linked with others through a flexible network that users altered by reprogramming rather than rewiring. The machine´s system of connections and switches let processors broadcast information and requests for help to other processors in a simulation of brain-like associative recall. Using this system, the machine could work faster than any other at the time on a problem that could be parceled out among the many processors.

Acorn Archimedes is released

research paper on history of computers

Acorn Archimedes microcomputer

Acorn's ARM RISC microprocessor is first used in the company's Archimedes computer system. One of Britain's leading computer companies, Acorn continued the Archimedes line, which grew to nearly twenty different models, into the 1990s. Acorn spun off ARM as its own company to license microprocessor designs, which in turn has transformed mobile computing with ARM’s low power, high-performance processors and systems-on-chip (SoC).

IBM introduces its Personal System/2 (PS/2) machines

research paper on history of computers

The first IBM system to include Intel´s 80386 chip, the company ships more than 1 million units by the end of the first year. IBM released a new operating system, OS/2, at the same time, allowing the use of a mouse with IBM PCs for the first time. Many credit the PS/2 for making the 3.5-inch floppy disk drive and video graphics array (VGA) standard for IBM computers. The system was IBM's response to losing control of the PC market with the rise of widespread copying of the original IBM PC design by “clone” makers.

Apple co-founder Steve Jobs unveils the NeXT Cube

research paper on history of computers

Steve Jobs, forced out of Apple in 1985, founds a new company – NeXT. The computer he created, an all-black cube was an important innovation. The NeXT had three Motorola microprocessors and 8 MB of RAM. Its base price was $6,500. Some of its other innovations were the inclusion of a magneto-optical (MO) disk drive, a digital signal processor and the NeXTSTEP programming environment (later released as OPENSTEP). This object-oriented multitasking operating system was groundbreaking in its ability to foster rapid development of software applications. OPENSTEP was used as one of the foundations for the new Mac OS operating system soon after NeXT was acquired by Apple in 1996.

Laser 128 is released

research paper on history of computers

Laser 128 Apple II clone

VTech, founded in Hong Kong, had been a manufacturer of Pong-like games and educational toys when they introduce the Laser 128 computer. Instead of simply copying the basic input output system (BIOS) of the Apple II as Franklin Computer had done, they reversed engineered the system and sold it for US $479, a much lower price than the comparable Apple II. While Apple sued to remove the Laser 128 from the market, they were unsuccessful and the Laser remained one of the very few Apple “clones” for sale.

Intel introduces the 80486 microprocessor

research paper on history of computers

Intel 80486 promotional photo

Intel released the 80486 microprocessor and the i860 RISC/coprocessor chip, each of which contained more than 1 million transistors. The RISC microprocessor had a 32-bit integer arithmetic and logic unit (the part of the CPU that performs operations such as addition and subtraction), a 64-bit floating-point unit, and a clock rate of 33 MHz.

The 486 chips remained similar in structure to their predecessors, the 386 chips. What set the 486 apart was its optimized instruction set, with an on-chip unified instruction and data cache and an optional on-chip floating-point unit. Combined with an enhanced bus interface unit, the microprocessor doubled the performance of the 386 without increasing the clock rate.

Macintosh Portable is introduced

research paper on history of computers

Macintosh Portable

Apple had initially included a handle in their Macintosh computers to encourage users to take their Macs on the go, though not until five years after the initial introduction does Apple introduce a true portable computer. The Macintosh Portable was heavy, weighing sixteen pounds, and expensive (US$6,500). Sales were weaker than projected, despite being widely praised by the press for its active matrix display, removable trackball, and high performance. The line was discontinued less than two years later.

Intel's Touchstone Delta supercomputer system comes online

research paper on history of computers

Intel Touchstone Delta supercomputer

Reaching 32 gigaflops (32 billion floating point operations per second), Intel’s Touchstone Delta has 512 processors operating independently, arranged in a two-dimensional communications “mesh.” Caltech researchers used this supercomputer prototype for projects such as real-time processing of satellite images, and for simulating molecular models in AIDS research. It would serve as the model for several other significant multi-processor systems that would be among the fastest in the world.

Babbage's Difference Engine #2 is completed

research paper on history of computers

The Difference Engine #2 at the Science Museum, London

Based on Charles Babbage's second design for a mechanical calculating engine, a team at the Science Museum in London sets out to prove that the design would have worked as planned. Led by curator Doron Swade the team built Babbage’s machine in six years, using techniques that would have been available to Babbage at the time, proving that Babbage’s design was accurate and that it could have been built in his day.

PowerBook series of laptops is introduced

research paper on history of computers

PowerBook 100 laptop computer

Apple's Macintosh Portable meets with little success in the marketplace and leads to a complete redesign of Apple's line of portable computers. All three PowerBooks introduced featured a built-in trackball, internal floppy drive, and palm rests, which would eventually become typical of 1990s laptop design. The PowerBook 100 was the entry-level machine, while the PowerBook 140 was more powerful and had a larger memory. The PowerBook 170 was the high-end model, featuring an active matrix display, faster processor, as well as a floating point unit. The PowerBook line of computers was discontinued in 2006.

DEC announces Alpha chip architecture

research paper on history of computers

DEC Alpha chip die-shot

Designed to replace the 32-bit VAX architecture, the Alpha is a 64-bit reduced instruction set computer (RISC) microprocessor. It was widely used in DEC's workstations and servers, as well as several supercomputers like the Chinese Sunway Blue Light system, and the Swiss Gigabooster. The Alpha processor designs were eventually acquired by Compaq, which, along with Intel, phased out the Alpha architecture in favor of the HP/Itanium microprocessor.

Intel Paragon is operational

research paper on history of computers

Intel Paragon system

Based on the Touchstone Delta computer Intel had built at Caltech, the Paragon is a parallel supercomputer that uses 2,048 (later increased to more than four thousand) Intel i860 processors. More than one hundred Paragons were installed over the lifetime of the system, each costing as much as five million dollars. The Paragon at Caltech was named the fastest supercomputer in the world in 1992. Paragon systems were used in many scientific areas, including atmospheric and oceanic flow studies, and energy research.

Apple ships the first Newton

research paper on history of computers

The Apple Newton Personal Digital Assistant

Apple enters the handheld computer market with the Newton. Dubbed a “Personal Digital Assistant” by Apple President John Sculley in 1992, the Newton featured many of the features that would define handheld computers in the following decades. The handwriting recognition software was much maligned for inaccuracy. The Newton line never performed as well as hoped and was discontinued in 1998.

Intel's Pentium microprocessor is released

research paper on history of computers

HP Netserver LM, one of the first to use Intel's Pentium

The Pentium is the fifth generation of the ‘x86’ line of microprocessors from Intel, the basis for the IBM PC and its clones. The Pentium introduced several advances that made programs run faster such as the ability to execute several instructions at the same time and support for graphics and music.

RISC PC is released

research paper on history of computers


Replacing their Archimedes computer, the RISC PC from UK's Acorn Computers uses the ARMv3 RISC microprocessor. Though it used a proprietary operating system, RISC OS, the RISC PC could run PC-compatible software using the Acorn PC Card. The RISC PC was used widely in UK broadcast television and in music production.

BeBox is released

research paper on history of computers

BeBox computer

Be, founded by former Apple executive Jean Louis Gassée and a number of former Apple, NeXT and SUN employees, releases their only product – the BeBox. Using dual PowerPC 603 CPUs, and featuring a large variety of peripheral ports, the first devices were used for software development. While it did not sell well, the operating system, Be OS, retained a loyal following even after Be stopped producing hardware in 1997 after less than 2,000 machines were produced.

IBM releases the ThinkPad 701C

research paper on history of computers

IBM ThinkPad 701C

Officially known as the Track Write, the automatically expanding full-sized keyboard used by the ThinkPad 701 is designed by inventor John Karidis. The keyboard was comprised of three roughly triangular interlocking pieces, which formed a full-sized keyboard when the laptop was opened -- resulting in a keyboard significantly wider than the case. This keyboard design was dubbed “the Butterfly.” The need for such a design was lessened as laptop screens grew wider.

Palm Pilot is introduced

research paper on history of computers

Ed Colligan, Donna Dubinsky, and Jeff Hawkins

Palm Inc., founded by Ed Colligan, Donna Dubinsky, and Jeff Hawkins, originally created software for the Casio Zoomer personal data assistant. The first generation of Palm-produced devices, the Palm 1000 and 5000, are based around a Motorola microprocessor running at 16MHz, and uses a special gestural input language called “Graffiti,” which is quick to learn and fast. Palm could be connected to a PC or Mac using a serial port to synchronize – “sync” – both computer and Palm. The company called it a ‘connected organizer’ rather than a PDA to emphasize this ability.

Sony Vaio series is begun

research paper on history of computers

Sony Vaio laptop

Sony had manufactured and sold computers in Japan, but the VAIO signals their entry into the global computer market. The first VAIO, a desktop computer, featured an additional 3D interface on top of the Windows 95 operating system as a way of attracting new users. The VAIO line of computers would be best known for laptops were designed with communications and audio-video capabilities at the forefront, including innovative designs that incorporated TV and radio tuners, web cameras, and handwriting recognition. The line was discontinued in 2014.

ASCI Red is operational

research paper on history of computers

ASCI Red supercomputers

The Advanced Strategic Computing Initiative (ASCI) needed a supercomputer to help with the maintenance of the US nuclear arsenal following the ban on underground nuclear testing. The ASCI Red, based on the design of the Intel Paragon, was built by IBM and delivered to Sandia National Laboratories. Until the year 2000, it was the world's fastest supercomputer, able to achieve peak performance of 1.3 teraflops, (about 1.3 trillion calculations per second).

Linux-based Supercomputing

research paper on history of computers

Linux Supercomputer

The first supercomputer using the Linux operating system, consumer, off-the shelf parts, and a high-speed, low-latency interconnection network, was developed by David A. Bader while at the University of New Mexico. From this successful prototype design, Bader led the development of “RoadRunner”, the first Linux supercomputer for open use by the national science and engineering community via the National Science Foundation's National Technology Grid. RoadRunner was put into production use in April 1999. Within a decade this design became the predominant architecture for all major supercomputers in the world.

The iMac, a range of all-in-one Macintosh desktop computers, is launched

research paper on history of computers

iMac poster

Apple makes a splash with its Bondi Blue iMac, which sells for about $1,300. Customers got a machine with a 233-MHz G3 processor, 4GB hard drive, 32MB of RAM, a CD-ROM drive, and a 15" monitor. The machine was noted for its ease-of-use and included a 'manual' that contained only a few pictures and less than 20 words. As Apple’s first new product under the leadership of a returning Steve Jobs, many consider this the most significant step in Apple's return from near-bankruptcy in the middle 1990s.

First camera phone introduced

research paper on history of computers

Sony-built J-Phone J-SH04

Japan's SoftBank introduces the first camera phone, the J-Phone J-SH04; a Sharp-manufactured digital phone with integrated camera. The camera had a maximum resolution of 0.11 megapixels a 256-color display, and photos could be shared wirelessly. The J-Phone line would quickly expand, releasing a flip-phone version just a month later. Cameras would become a significant part of most phones within a year, and several countries have even passed laws regulating their use.

Earth Simulator is world's fastest supercomputer

research paper on history of computers

Earth Simulator Supercomputer

Developed by the Japanese government to create global climate models, the Earth Simulator is a massively parallel, vector-based system that costs nearly 60 billion yen (roughly $600 million at the time). A consortium of aerospace, energy, and marine science agencies undertook the project, and the system was built by NEC around their SX-6 architecture. To protect it from earthquakes, the building housing it was built using a seismic isolation system that used rubber supports. The Earth Simulator was listed as the fastest supercomputer in the world from 2002 to 2004.

Handspring Treo is released

research paper on history of computers

Colligan, Dubinsky, Hawkins (left to right)

Leaving Palm Inc., Ed Colligan, Donna Dubinsky, and Jeff Hawkins found Handspring. After retiring their initial Visor series of PDAs, Handspring introduced the Treo line of smartphones, designed with built-in keyboards, cameras, and the Palm operating system. The Treo sold well, and the line continued until Handspring was purchased by Palm in 2003.

PowerMac G5 is released

research paper on history of computers

PowerMac G5 tower computer

With a distinctive anodized aluminum case, and hailed as the first true 64-bit personal computer, the Apple G5 is the most powerful Macintosh ever released to that point. While larger than the previous G4 towers, the G5 had comparatively limited space for expansion. Virginia Tech used more than a thousand PowerMac G5s to create the System X cluster supercomputer, rated #3 in November of that year on the world’s TOP500 fastest computers.

research paper on history of computers

Arduino starter kit

Harkening back to the hobbyist era of personal computing in the 1970s, Arduino begins as a project of the Interaction Design Institute, Ivrea, Italy. Each credit card-sized Arduino board consisted of an inexpensive microcontroller and signal connectors which made Arduinos ideal for use in any application connecting to or monitoring the outside world. The Arduino used a Java-based integrated development environment and users could access a library of programs, called “Wiring,” that allowed for simplified programming. Arduino soon became the main computer platform of the worldwide “Maker” movement.

Lenovo acquires IBM's PC business

research paper on history of computers

IBM and Lenovo logos

Nearly a quarter century after IBM launched their PC in 1981, they had become merely another player in a crowded marketplace. Lenovo, China's largest manufacturer of PCs, purchased IBM's personal computer business in 2005, largely to gain access to IBM's ThinkPad line of computers and sales force. Lenovo became the largest manufacturer of PCs in the world with the acquisition, later also acquiring IBM's server line of computers.

NASA Ames Research Center supercomputer Columbia

research paper on history of computers

Columbia Supercomputer system made up of SGI Altix

Named in honor of the space shuttle which broke-up on re-entry, the Columbia supercomputer is an important part of NASA's return to manned spaceflight after the 2003 disaster. Columbia was used in space vehicle analysis, including studying the Columbia disaster, but also in astrophysics, weather and ocean modeling. At its introduction, it was listed as the second fastest supercomputer in the world and this single system increased NASA's supercomputing capacity 10-fold. The system was kept at NASA Ames Research Center until 2013, when it was removed to make way for two new supercomputers.

One Laptop Per Child initiative begins

research paper on history of computers

OLPC XO laptop computer

At the 2006 World Economic Forum in Davos, Switzerland, the United Nations Development Program (UNDP) announces it will create a program to deliver technology and resources to targeted schools in the least developed countries. The project became the One Laptop per Child Consortium (OLPC) founded by Nicholas Negroponte, the founder of MIT's Media Lab. The first offering to the public required the buyer to purchase one to be given to a child in the developing world as a condition of acquiring a machine for themselves. By 2011, over 2.4 million laptops had been shipped.

The Amazon Kindle is released

research paper on history of computers

Amazon Kindle

Many companies have attempted to release electronic reading systems dating back to the early 1990s. Online retailer Amazon released the Kindle, one of the first to gain a large following among consumers. The first Kindle featured wireless access to content via Amazon.com, along with an SD card slot allowing increased storage. The first release proved so popular there was a long delay in delivering systems on release. Follow-on versions of the Kindle added further audio-video capabilities.

The Apple iPhone is released

research paper on history of computers

Apple iPhone

Apple launches the iPhone - a combination of web browser, music player and cell phone - which could download new functionality in the form of "apps" (applications) from the online Apple store. The touchscreen enabled smartphone also had built-in GPS navigation, high-definition camera, texting, calendar, voice dictation, and weather reports.

The MacBook Air is released

research paper on history of computers

Steve Jobs introducing MacBook Air

Apple introduces their first ultra notebook – a light, thin laptop with high-capacity battery. The Air incorporated many of the technologies that had been associated with Apple's MacBook line of laptops, including integrated camera, and Wi-Fi capabilities. To reduce its size, the traditional hard drive was replaced with a solid-state disk, the first mass-market computer to do so.

IBM's Roadrunner supercomputer is completed

research paper on history of computers

Computer-enhanced image of IBM’s Roadrunner

The Roadrunner is the first computer to reach a sustained performance of 1 petaflop (one thousand trillion floating point operations per second). It used two different microprocessors: an IBM POWER XCell L8i and AMD Opteron. It was used to model the decay of the US nuclear arsenal, analyze financial data, and render 3D medical images in real-time. An offshoot of the POWER XCell8i chip was used as the main processor in the Sony PlayStation 3 game console.

Jaguar Supercomputer at Oak Ridge upgraded

Originally a Cray XT3 system, the Jaguar is a massively parallel supercomputer at Oak Ridge National Laboratory, a US science and energy research facility. The system cost more than $100 million to create and ran a variation of the Linux operating system with up to 10 petabytes of storage. The Jaguar was used to study climate science, seismology, and astrophysics applications. It was the fastest computer in the world from November 2009 to June 2010.

Apple Retina Display

research paper on history of computers

Introduction of the iPhone 4 with retina display

Since the release of the Macintosh in 1984, Apple has placed emphasis on high-resolution graphics and display technologies. In 2012, Apple introduced the Retina display for the MacBook Pro laptop and iPad tablet. With a screen resolution of up to 400 pixels-per-inch (PPI), Retina displays approached the limit of pixel visibility to the human eye. The display also used In Plane Switching (IPS) technology, which allowed for a wider viewing angle and improved color accuracy. The Retina display became standard on most of the iPad, iPhone, MacBook, and Apple Watch product lines.

China's Tianhe supercomputers are operational

research paper on history of computers

Tianhe-1A Supercomputer

With a peak speed of over a petaflop (one thousand trillion calculations per second), the Tianhe 1 (translation: Milky Way 1) is developed by the Chinese National University of Defense Technology using Intel Xeon processors combined with AMD graphic processing units (GPUs). The upgraded and faster Tianhe-1A used Intel Xeon CPUs as well, but switched to nVidia's Tesla GPUs and added more than 2,000 Fei-Tang (SPARC-based) processors. The machines were used by the Chinese Academy of Sciences to run massive solar energy simulations, as well as some of the most complex molecular studies ever undertaken.

The Apple iPad is released

research paper on history of computers

Steve Jobs introducing the iPad

The iPad combines many of the popular capabilities of the iPhone, such as built-in high-definition camera, access to the iTunes Store, and audio-video capabilities, but with a nine-inch screen and without the phone. Apps, games, and accessories helped spur the popularity of the iPad and led to its adoption in thousands of different applications from movie making, creating art, making music, inventory control and point-of-sale systems, to name but a few.

IBM Sequoia is delivered to Lawrence Livermore Labs

Built by IBM using their Blue Gene/Q supercomputer architecture, the Sequoia system is the world's fastest supercomputer in 2012. Despite using 98,304 PowerPC chips, Sequoia's relatively low power usage made it unusually efficient. Scientific and defense applications included studies of human electrophysiology, nuclear weapon simulation, human genome mapping, and global climate change.

Nest Learning Thermostat is Introduced

research paper on history of computers

Nest Learning Thermostat

The Nest Learning Thermostat is an early product made for the emerging “Internet of Things,” which envisages a world in which common everyday devices have network connectivity and can exchange information or be controlled. The Nest allowed for remote access to a user’s home’s thermostat by using a smartphone or tablet and could also send monthly power consumption reports to help save on energy bills. The Nest would remember what temperature users preferred by ‘training’ itself to monitor daily use patterns for a few days then adopting that pattern as its new way of controlling home temperature.

Raspberry Pi, a credit-card-size single board computer, is released as a tool to promote science education

research paper on history of computers

Raspberry Pi computer

Conceived in the UK by the Raspberry Pi Foundation, this credit card-sized computer features ease of use and simplicity making it highly popular with students and hobbyists. In October 2013, the one millionth Raspberry Pi was shipped. Only one month later, another one million Raspberry Pis were delivered. The Pi weighed only 45 grams and initially sold for only $25-$35 U.S. Dollars.

University of Michigan Micro Mote is Completed

research paper on history of computers

The University of Michigan Micro Mote is the smallest computer in the world. The motes, measuring just over 1 cubic millimeter, were powered by a tiny battery and could collect sunlight through a photocell, enough to supply the tiny amount of energy a mote consumes -- about one trillionth of a watt. Three types of mote were initially introduced: two that measure temperature or pressure, and one that could take images. Since then, motes that recognize different sounds, measure light, track position, and record brain activity have been developed.

Motes are also known as "smart dust," since their tiny size and low cost make them inexpensive enough to "sprinkle" in the real world as sensors. An ecologist, for example, could sprinkle thousands of motes from the air onto a field and measure soil and air temperature, moisture, and sunlight, yielding accurate real-time data about the environment.

Apple Watch

research paper on history of computers

Apple Store’s display of newly introduced Apple Watches

Building a computer into the watch form factor has been attempted many times but the release of the Apple Watch leads to a new level of excitement. Incorporating a version of Apple's iOS operating system, as well as sensors for environmental and health monitoring, the Apple Watch was designed to be incorporated into the Apple environment with compatibility with iPhones and Mac Books. Almost a million units were ordered on the day of release. The Watch was received with great enthusiasm, but critics took issue with the somewhat limited battery life and high price.

Exhibit Design and Development Team

Exhibit content team.

research paper on history of computers

The Origins of Digital Computers

Selected Papers

  • © 1982
  • Latest edition
  • Brian Randell 0

Computing Laboratory, University of Newcastle upon Tyne, Newcastle upon Tyne, England

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Part of the book series: Monographs in Computer Science (MCS)

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Table of contents (36 chapters)

Front matter, introduction.

  • David Gries

Analytical Engines

On the mathematical powers of the calculating engine.

  • Charles Babbage

Report of the Committee, consisting of Professor C ayley , Dr. F arr , 2.2. Mr. J. W. L. G laisher , Dr. P ole , Professor F uller , Professor A. B. W. K ennedy , Professor C lifford , and Mr. C. W. M errifield , appointed to consider the advisability and to estimate the expense of constructing Mr. B abbage’s Analytical Machine, and of printing Tables by its means .

  • C. W. Merrifield

Babbage’s Analytical Engine

  • H. P. Babbage

On a Proposed Analytical Machine

  • Percy E. Ludgate

Essays on Automatics

  • Leonardo Torres y Quevedo

Electromechanical Calculating Machine

Scheme of assembly of a machine suitable for the calculations of celestial mechanics.

  • L. Couffignal

Tabulating Machines

An electric tabulating system.

  • H. Hollerith

Calculating Machines: Their Principles and Evolution

The automatic calculator ipm.

  • H.-J. Dreyer, A. Walther

Zuse and Schreyer

Method for automatic execution of calculations with the aid of computers.

  • Konrad Zuse

Technical Computing Machines

  • Helmut Schreyer

The Outline of a Computer Development from Mechanics to Electronics

Aiken and ibm, proposed automatic calculating machine.

  • Howard Aiken
  • Datenverarbeitung
  • History of Computer Science
  • computer science

Editors and Affiliations

Brian Randell

Bibliographic Information

Book Title : The Origins of Digital Computers

Book Subtitle : Selected Papers

Editors : Brian Randell

Series Title : Monographs in Computer Science

DOI : https://doi.org/10.1007/978-3-642-61812-3

Publisher : Springer Berlin, Heidelberg

eBook Packages : Springer Book Archive

Copyright Information : Springer-Verlag Berlin Heidelberg 1982

Hardcover ISBN : 978-3-540-11319-5 Published: 01 July 1982

Softcover ISBN : 978-3-642-61814-7 Published: 01 November 2011

eBook ISBN : 978-3-642-61812-3 Published: 21 December 2013

Series ISSN : 0172-603X

Series E-ISSN : 2512-5486

Edition Number : 3

Number of Pages : XVI, 582

Topics : Logic Design

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research paper on history of computers

5 Antivirus Software Brands to Avoid

P icking out antivirus software brands to avoid out of all of the options on the market can be a little confusing. Antivirus software that has been popular among most consumers since the 2000s made home computing more accessible. Since the initial scare of early computer viruses , these antivirus programs have been deemed a necessity.

However, that isn’t necessarily true. These days, antivirus software is a frivolous extra that may add more problems than assistance. Overall, it’s not a good idea to rely on a single app or program to protect your entire system, but some of the most famous antivirus software brands are not something that you should put on your computer. Let’s check out some of the most troublesome offenders.

Norton is one of the most well-known antivirus software brands out there. It may even be the most famous, with millions of people purchasing its services yearly, relying on them to protect sensitive information for over 2 decades. The most misleading loophole in Norton’s offerings is that it does not include real-time protection, ultimately defeating the entire point. You also shouldn’t notice that antivirus software is running at all, but Norton makes its presence known.

McAfee is more known for the annoying popups that come with the service, rather than the service itself. Then, when people do talk about the service, it is usually with an attitude of annoyance beyond those popups. Users cannot control updates, with many reporting activities being completely interrupted with no real way out. Ultimately, McAfee is completely outdated, while some of these other options may still have one or two positive, redeeming qualities.

MacKeeper has a long history of misdeeds . On the surface, it even seems like a scam or like it’s malware that you’re trying to avoid when you’re called to install antivirus software in the first place. It is extremely well-advertised, so even long-time experts may have considered using it at one point. Thankfully, Apple’s OS doesn’t require third-party antivirus software to begin with. Most Apple enthusiasts use that as a selling point for the computers.

Webroot should come with a warning sign that tells every user not to attempt uninstalling it. It is incredibly difficult to uninstall the program, with many users giving up entirely, succumbing to their fate, and realizing they should have avoided the software altogether. Reporting anything to the service is pretty terribly designed, which is a significantly important feature of antivirus software. Webroot’s major selling point is the low price tag that comes with the service. Though it may be tempting to go the economical route, sometimes, you really do get what you pay for. 

Avast is another company that managed to do exactly what a security company should never even think of — sell their customers’ data to a third party . One simple action completely tarnished the brand’s reputation forever. Before then, though, Avast would show extremely threatening popups to its users. Antivirus software is meant to protect users, not scare them.

Of course, antivirus software isn’t always bad. However, it’s also not normally a necessity. You can save yourself money and trouble by avoiding antivirus software, but especially these 5 well-known brands that offer subpar (or worse) services. If you want to avoid malware and viruses , stick with the built-in Windows Defender — which comes with all Windows 10 and 11 systems, or opt for a more reliable app like Malwarebytes.

The image featured at the top of this post is ©Carlos Amarillo/Shutterstock.com.

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Google Images: History, how to search for pictures or perform a reverse image search on iPhone, Android, or desktop

  • Google Images lets you search for pictures and photos, and even perform reverse image searches.
  • Google Images was invented after Jennifer Lopez wore a daring green Versace dress to the Grammys.
  • You can perform image searches or reverse image searches on iPhone, Android, or desktop.

Insider Today

Google is much more than just a search engine. Since its launch back in 1998, Google has built an impressive array of specialized tools to help people use, search, and navigate the internet and world around them. 

Google Images is one of the many features the search giant offers; it's a great place to search for pictures and photos by using relevant keywords.

You can also search Google Images using an image rather than text — this is known as a reverse image search — to find out more information about a specific photo or graphic.

The invention of Google Images was famously precipitated by the pop star Jennifer Lopez, whose daring green Versace dress at the 2000 Grammy Awards became the most popular search query Google had seen at the time. Former Google CEO Eric Schmidt later wrote that Google had no real way of getting users the results they were searching for, which were simply pictures of JLo in the iconic dress.

Schmidt said the invention of Google Images was a classic example of what Google cofounders Larry Page and Sergey Brin did best: innovating and iterating in response to user demand. Google performed a similar feat in 2011 when the company added reverse image search functionality.

Here's how and why you might want to use Google Images and its reverse image search tool. 

What is Google Images?

Google Images lets you type in a search term — it can be a person, place, event, item, or anything else you want to visualize — and brings up a gallery of images that match. Those images are all linked to websites, so you can easily go right to the source for more information.

The main factor in determining what images populate your results page is how closely your search terms match the image filenames. 

Here are three simple ways to access Google Images:

  • Visit google.com and select Images in the upper-right corner.
  • Visit images.google.com , which is a more direct way to get to Google Images.
  • Input the search terms for your image search into the default Google search and select Images on the results page. 

Once a search is submitted, Google finds a set of thumbnail images correlating to your keyword description.

Google Images is also far from Google's only photo tool — Google Photos is a photo-sharing and storage service with its own search features that functions similarly to Google Drive for documents.

Google Lens , which launched in 2017, is Google's image recognition technology that functions similarly to a reverse image search: it uses your device's camera to identify real-world objects like products or locations or even people, and gives you information about them.

What is Google's Search by Image? 

Google's Search by Image is a feature that uses reverse image search functionality. 

Related stories

When you do a Google reverse Image search, you place a photo or a link to a photo in the search bar instead of a text query. Google then finds websites featuring your image as well as related images.

When to do a Google reverse image search

It's most helpful to search with an image on Google in the following cases:

  • Find information about a photo. A Google reverse image search could bring up a website that includes a person's name or information about a product. It can also indicate whether a photo is being used for mis- or disinformation, as is often the case with deepfakes or "shallowfakes."
  • Uncover plagiarism. A reverse image search will bring up similar images. This can reveal whether an image was copied from someone else's work.
  • Find other similar images. If you want to find other photos connected to a specific image, a Google reverse search will populate related pictures.
  • Shop for a specific product. If you have an image of an article of clothing, product, or other object, Google will automatically show you images of the same or similar products with links to purchase them.

Google reverse image search on iPhone or Android

You can reverse image search on iPhone or Android using a photo from the internet or your camera roll. Here's how to do it.

Using an image from your files

This option requires that you have Google for Android or Google for iOS app installed on your device.

  • Open the Google app on your iPhone or Android.
  • Tap the camera icon in the search bar. The app might ask for permission to access your camera and image gallery. When it does, grant permission.

Quick tip: If you have the Google Search widget on your Home Screen, you can tap the camera icon to start a reverse image search

  • Either tap the shutter button in the middle section to take a picture or look for the image in your gallery in the bottom left section and then tap on the image to perform the search.
  • After a moment, Google will display the results of the image search.

Using an image from the search results

Before proceeding with this method, you'll need to download the Google Chrome mobile app to perform a reverse image search on your mobile device.

  • Open the Google app on your iPhone or Android, or open google.com in the Chrome app.
  • Describe the image you want to search. For example, you could type "tuxedo cat."
  • Tap the Images tab at the top so you can only see the image search results
  • Select an image from the search results and hit the camera icon in the bottom left-hand corner.
  • Then, select Search from the menu, and Google will show you images and related search terms that match your query.

Google reverse image search on a computer

You can do a more robust Google reverse image search on your computer by uploading a file from your computer or searching for an image on the web. Google Images works with Chrome, Firefox, and Safari browsers.

  • Open images.google.com in a web browser.
  • Click the camera icon.
  • Either drag and drop your image where it says "Drag an image here" or click on the "upload a file" link to search for the image on your computer.
  • If you choose to upload the image, find it on your computer, click on it, and select Open.
  • After the image is uploaded, you'll be taken to a page containing similar images or information about the image.

Using an image from the internet

  • Right click on the image you found in Google.
  • Choose Copy image address in the pop-up.
  • Paste the picture's URL in the text box that says Paste image link.
  • Click on the Search button, and you'll be taken to a page of results related to your image.

Quick tip: You can also do a reverse image search from Google image search results. Just right-click on an image and choose Search image with Google Lens.

On February 28, Axel Springer, Business Insider's parent company, joined 31 other media groups and filed a $2.3 billion suit against Google in Dutch court, alleging losses suffered due to the company's advertising practices.

Watch: These smartglasses use ChatGPT to help the blind and visually impaired

research paper on history of computers

  • Main content

In today’s competitive business environment, firms are confronted with complex, computational issues that demand swift resolution. Such problems might be too intricate for a single system to handle or might require an extended time to resolve. For companies that need quick answers, every minute counts. Allowing problems to linger for weeks or months is not feasible for businesses determined to stay ahead of the competition. To address these challenges, enterprises across various industries, such as those in the semiconductor, life sciences, healthcare, financial services and more, have embraced high-performance computing (HPC) .

With HPC, enterprises are taking advantage of the speed and performance that comes with powerful computers working together. This can be especially helpful amid a steadily growing push to build AI on a larger and larger scale. While analyzing massive amounts of data might feel impossible, HPC enables the use of high-end computational resources that can perform many computations rapidly and in parallel to help businesses get insights faster. At the same time, HPC is used to help businesses bring new products to market. It is also used to better manage risks and more, which is why an increasing number of enterprises are adopting it.

The role of cloud in HPC

Most commonly, enterprises that run workloads with surges in activity are finding that they exceed the compute capacity available on-premises. This is an example of where cloud computing can augment on-premises HPC to transform the business’s approach to HPC with cloud resources. Cloud can help address peaks in demand during product development cycles, which might last from a short duration to a longer duration, and enable organizations to get access to the resources and capabilities that they might not have a need for around the clock. Businesses using HPC from the cloud can take advantage of the benefits of greater flexibility, enhanced scalability, better agility, improved cost efficiencies and more.

Cadence uses IBM Cloud HPC

Cadence is a global innovator in electronic design automation (EDA) with over 30 years of computational software experience. It has helped companies across the world design electronic products that drive today’s emerging technology, including chips. The growing demand for more chips, along with the company’s incorporation of AI and machine learning into its EDA processes means that their need for compute power is at an all-time high. For organizations in the EDA industry like Cadence, solutions that enable workloads to seamlessly shift between on premises and the cloud, while also allowing for differentiation from project to project, are key.

Cadence uses IBM Cloud® HPC with IBM Spectrum® LSF as the workload scheduler to support the development of chip and system design software, which requires innovative solutions, powerful compute resources and advanced security support. By using IBM Cloud HPC, Cadence reports improved time-to-solution, performance enhancements, cost reductions and streamlined workload management.

Additionally, Cadence understands firsthand that moving to the cloud can require new knowledge and capabilities that not every company possesses. The Cadence Cloud comprehensive portfolio aims to help customers across the world use the possibilities of the cloud with Cadence Managed Cloud Service as a turnkey solution ideal for start-ups and small and medium customers, and with the customer-managed cloud option known as Cloud Passport to enable Cadence tools for large enterprise customers. Cadence is dedicated to giving its customers an easy path to the cloud by connecting them with knowledgeable service providers, such as IBM®, whose platforms can be used to deploy Cadence tools in cloud environments. For enterprises that want to drive innovation at scale, the Cadence Cloud Passport model can deliver access to cloud-ready software tools for use on IBM Cloud.

Taking a hybrid cloud approach to HPC

Traditionally, HPC systems were built on-premises. However, the large models and large workloads that exist today are often not compatible with the hardware that most companies have on premises. Given the high up-front costs of obtaining GPUs, CPUs and networking, as well as those of building the data center infrastructures needed to efficiently run compute at scale, many companies have used cloud infrastructure providers that have already made massive investments in their hardware. To realize the full value of public cloud and on-premises infrastructures, many organizations are adopting a hybrid cloud architecture that is focused on the mechanics of transforming portions of a company’s on-premises data center into private cloud infrastructure.

By adopting a hybrid cloud approach to HPC where cloud and on premises are used together, organizations can use the strengths of both, allowing organizations to achieve the agility, flexibility and security required to meet their demands. For example, IBM Cloud® HPC can help organizations flexibly manage compute-intensive workloads on-premises. With security and controls built into the platform, IBM Cloud HPC also allows organizations to consume HPC as a fully managed service while helping them address third- and fourth-party risks.

Looking ahead

By using hybrid cloud services through platforms like IBM Cloud HPC, enterprises can solve many of their most difficult challenges. As organizations continue to embrace HPC, they should consider how a hybrid cloud approach can complement traditional on-premises HPC infrastructure deployments.

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  1. (PDF) History of computer and its generations.

    The history of computer dated back to the period of scientific revolution (i.e. 1543 - 1678). The calculating machine invented by Blaise Pascal in 1642 and. that of Goffried Liebnits marked the ...

  2. History of Computing

    This chapter gives an overview of the history of computing science in hardware, software, and networking, covering prehistoric (prior to 1946) computing devices and computing pioneers since the Abacus.The emergency of social and ethical problems in computing is discussed via the history of computer crimes which started with the invention of the computer virus.

  3. History of Computers

    The computer age is sufficiently mature to have fostered an interest in recording its history. The materials in this chapter have been assembled from a variety of sources. The Encyclopedia of Computer Science and Engineering , 2nd edit., edited by Anthony Ralston and Edwin D. Reilly, Jr., Van Nostrand Reinhold, 1983, is a very useful source ...

  4. Histories of Computing

    Computer technology is pervasive in the modern world, its role ever more important as it becomes embedded in a myriad of physical systems and disciplinary ways of thinking. The late Michael Sean Mahoney was a pioneer scholar of the history of computing, one of the first established historians of science to take seriously the challenges and opportunities posed by information technology to our ...

  5. The History of Computing: A Very Short Introduction

    Abstract. This book describes the central events, machines, and people in the history of computing, and traces how innovation has brought us from pebbles used for counting, to the modern age of the computer. It has a strong historiographical theme that offers a new perspective on how to understand the historical narratives we have constructed ...

  6. PDF The History of Computing

    The History of Computing. Abstract Diving back as early as the fourth-century BC, China had been using a prototype of abacus called counting boards. With regard to the current dominance of China as a major contributor to Science and Technology, it is obvious that computing has played a key role in this palmy rise.

  7. History of computing

    The history of computing is longer than the history of computing hardware and modern computing technology and includes the history of methods intended for pen and paper or for chalk and slate, ... By the time of Isaac Newton's research, paper or vellum was an important computing resource, ...

  8. PDF A brief history of computers

    Read on to learn more about the history of computers—or take a look at our article on how computers work. Photo: One of the world's most powerful computers: NASA's Pleiades ICE supercomputer consists of 112,896 processor cores made from 185 racks of Silicon Graphics (SGI) workstations. Photo by Dominic Hart courtesy of NASA Ames Research Center.

  9. Introduction: History of computing: Approaches, new directions and the

    linked with, and demanded a knowledge of, history of technology. The essays in this special issue of History and Technology stem from an invitation to write about history of computing in new ways. Unsurprisingly the contributions do not follow the same method-ological paths, although there are some common themes which I comment on below.

  10. The History of Computing in the History of Technology

    After surveying the current state of the literature in the history of computing, this article discusses some of the major issues addressed by recent work in the history of technology. It suggests aspects of the development of computing which are pertinent to those issues and hence for which that recent work could provide models of historical analysis. As a new scientific technology with unique ...

  11. The Origin of Computing

    The Origin of Computing. The information age began with the realization that machines could emulate the power of minds. In the standard story, the computer's evolution has been brisk and short ...

  12. PDF The History of Computing: An Introduction for the Computer Scientist

    2. The History of Computing: An Introduction for the Computer Scientist Thomas Haigh University of Wisconsin—Milwaukee Abstract This paper is intended to provide an introduction to the study of the history of computing for someone who has a good knowledge of computer science, but only a limited knowledge of the history of computing and

  13. [PDF] The History of Digital Computers

    This account describes the history of the development of digital computers, from the work of Charles Babbage to the earliest electronic stored program computers, and is in the main based on the introductory text written by the author for the book " The Origins of Digital Computers: Selected Papers " (Springer Verlag, 1973). This account describes the history of the development of digital ...

  14. Evolution of Computers and Computing

    Submission history. Published in print: 18 March 1977. Permissions. Request permissions for this article. Request Permissions. Authors Affiliations. Ruth M. Davis. Director of the Institute for Computer Sciences and Technology, National Bureau of Standards, Washington, D.C. 20234. View all articles by this author. Metrics & Citations

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    Abstract. The evolution of computers has been one of the most transformative journeys in human history. This review paper provides a comprehensive examination of the development of computers from their early beginnings to the present day, shedding light on the major milestones, technological breakthroughs, and their profound implications on society.

  16. Computers

    System/360 is a major event in the history of computing. On April 7, IBM announced five models of System/360, spanning a 50-to-1 performance range. At the same press conference, IBM also announced 40 completely new peripherals for the new family. System/360 was aimed at both business and scientific customers and all models could run the same ...

  17. Computer

    computer, device for processing, storing, and displaying information.. Computer once meant a person who did computations, but now the term almost universally refers to automated electronic machinery.The first section of this article focuses on modern digital electronic computers and their design, constituent parts, and applications. The second section covers the history of computing.

  18. The Origins of Digital Computers: Selected Papers

    Essays on Automatics. Leonardo Torres y Quevedo; Pages 89-107. ... History of Computer Science; computer; computer science; Editors and Affiliations. Computing Laboratory, University of Newcastle upon Tyne, Newcastle upon Tyne, England Brian Randell Bibliographic Information ...

  19. History of computer science

    The history of computer science began long before the modern discipline of computer science, usually appearing in forms like mathematics or physics.Developments in previous centuries alluded to the discipline that we now know as computer science. This progression, from mechanical inventions and mathematical theories towards modern computer concepts and machines, led to the development of a ...

  20. The History of Computers, Computing, and Information Processing Are

    An im portant advisory group has been formed for the institute including practi tioners, but no librarians at present. The leading technical journal is Annals of the History of Computing, now in its thirteenth year. It originated in the. MIT/Harvard/American Federation of Information Processing (or AFIPS) milieu.

  21. 5 Antivirus Software Brands to Avoid

    MacKeeper has a long history of misdeeds.On the surface, it even seems like a scam or like it's malware that you're trying to avoid when you're called to install antivirus software in the ...

  22. Google Images: History, How to Reverse Image Search on Mobile, Desktop

    Open images.google.com in a web browser. Advertisement. Click the camera icon. Either drag and drop your image where it says "Drag an image here" or click on the "upload a file" link to search for ...

  23. Agility, flexibility and security: The value of cloud in HPC

    This is an example of where cloud computing can augment on-premises HPC to transform the business's approach to HPC with cloud resources. Cloud can help address peaks in demand during product development cycles, which might last from a short duration to a longer duration, and enable organizations to get access to the resources and ...