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History of Computers

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The Sinclair ZX80

The History of Computers started with human nature wanting to control and count important items. It could be expected a cave man would count how many possession he had, to ensure that on his return he still had the same no. So computers start with the ability to under the volume of specific items we have.

Period
History of Computers
 
 
3000 BC
The abacus is invented in Babylonia
80 AD
The Antikythera Device, a bronze mechanical lunar month calculator, is constructed in Greece
1622
William Oughtred invents the slide rule. This first one was circular.
1623
Wilhelm Schickard designs the first known mechanical calculator, the "Calculating Clock" to multiply large numbers.
1642
Blaise Pascal invents an adding machine which he calls the Pascaline. It could perform addition and subtraction, but it was too expensive to be practical and only Pascal could keep it working
1666
Samuel Morland builds a mechanical calculator that will add and subtract
1674
Gottfried Leibnez, the man to blame for the invention of calculus, uses a stepped cylindrical gear to build his "Stepped Reckoner" which will both add and multiply
1679
Leibniz introduces binary mathematics
1774
Phillip-Malthus Hahn builds and sells a small number of calculating machines which are accurate to 12 digits
1777
The third Earl of Stanhope invents a multiplying calculator
1803-4
Joseph-Marie Jacquard invents an automated loom which uses punched cards to reproduce complex patterns.
1820
The first mass-produced calculating machine, Thomas de Colmar's Arithmometer, is marketed and continues in use for many years.
1822
Charles Babbage begins work on the Difference Engine
1829
The first typewriter is patented by William Austin Burt. It's slow and clumsy, but it's the first writing machine.
1831
The telegraph is invented
1832
Babbage completes a portion of his Difference Engine
1834
Babbage begins work on the Analytical Engine
1840
Lord Byron's daughter, Ada, Countess of Lovelace, suggests to Babbage that he use the binary system. She writes programs for his analytical engine, becoming the world's first programmer
1843
Ada translates Luigi Menabrea's theories of the analytical engine and adds her own commentary
1853
Scheutz invents the first printing calculator
1850's
George Boole develops Boolean Logic which will one day become the basis for computer logic.
1882
William S. Burroughs quits his job as a bank clerk and sets out to invent a reliable adding machine.
1890
Dr. Herman Hollerith introduces the first electro-mechanical punched-card data processing machine. It is used to compile information from the 1890 US census.
1892
Burroughs produces the first adding machine with a printer
1899
Magnetic recording is invented.
1901
Hollerith starts his own company, the Tabulating Machine Company, to market his data processing machines.
1906
William DeForest invents the vacuum tube
1917
Aberdeen Proving Grounds begins computing ballistics tables
1919
Two American physicists, Eccles and Jordan, invent the flip-flop circuit which will be necessary for high-speed electronic calculating.
1928
IBM adopts the 80 column punched card - used for the next 50 years
 
Teletypewriters and teleprinters come into limited use in Britain, Germany and the US
1930
Vannevar Bush builds the differential analyzer at M.I.T.
1934
The Moore School differential analyzer is completed
1935
IBM introduces the electric typewriter
1936
Konrad Zuse applies for a patent on his mechanical memory
 
Alan Turing publishes On Computable Numbers which lays a theoretical foundation for computer principles
1937
George Stibitz builds his model K, which demonstrates the feasibility of mechanizing binary math
1938
Konrad Zuse completes his Z1 calculating machine
1939
John Atanasoff begins work on his ABC computer
 
Howard Aiken begins work on the Harvard Mark 1 with funding from IBM
1940
Zuse introduces his Z1, the first programmable calculating machine to use the binary system. It is used to solve complex engineering equations
 
Bell Labs' George Stibitz and Samuel Williams complete the Complex Number Computer, later known as the Bell Labs Model 1.
 
Stibittz later demonstrates the Model 1 at Dartmouth College with a terminal in New Hampshire and the Model 1 in New York
1941
Zuse completes his Z3, the first program-controlled electromechanical digital computer.
 
In Britain, Alan Turing, M.H.A. Newman and Tommy Flowers complete work on the Colossus, the first all-electronic calculating machine. It is used during WWII to break German codes.
1942
John Mauchly and J.Presper Eckert propose a digital electronic version of Vannevar Bush's differential analyzer.
1943
Howard Aiken and staff at IBM's Endicott Labs complete the Harvard Mark 1, an automatic digital sequence-controlled computer.
 
The US government funds Mauchly and Eckert and work begins on the ENIAC (Electrical Numerical Integrator and Calculator)
 
In Britain, the Colossus computer is completed and set to work breaking German codes
 
Project Whirlwind, an analog flight simulator, is begun at M.I.T.
1944
The first tests of ENIAC. The US government extends funding to cover research on the EDVAC (Electronic Discrete Variable Computer), a stored program computer.
 
The Harvard Mark I, designed and built by Howard Aiken and his team of engineers, becomes operational.
1945
The ENIAC is up and running.
 
Zuse completes his Z4
 
The first computer "bug" is found in the Harvard Mark I by Grace Murray Hopper. It is a moth which got into one of the relays and caused it to fail.
 
Vannevar Bush's prophetic essay, As We May Think, is published in the Atlantic Monthly.
1946
The public gets its first glimpse of the ENIAC in Philadelphia on Valentines Day
 
Herman (CPL Irwin?) Goldstine invents flowcharts
1947
The transistor is invented by William Shockley, John Bardeen and Walter Brattain at Bell Labs
 
Howard Aiken and his team finish work on the Harvard Mark II
 
The ENIAC is moved to Aberdeen Proving Grounds
 
Maurice V. Wilkes begins work on the EDSAC (Electronic Delay Storage Automatic Computer) at Cambridge University
1948
The Manchester Mark 1 is operational
 
IBM unveils the SSEC, the Selective Sequence Electronic Calculator
 
Shockley, Bardeen and Bratain patent the transistor
1949
The EDSAC is completed
 
Eckert & Mauchly's company completes the BINAC computer for Northrup Aviation
 
An Wang develops magnetic core memory
 
The Whirlwind computer, the first real-time computer, is developed by Jay Forrester and his team at MIT
 
J.Lyons and Company, a British catering firm develops the first business computer, the LEO (Lyons Electronic Office), as a result of research which they funded at Cambridge
1950
Turing completes the ACE, considered by many to be the first programmable digital computer, at Britain's National Physics Laboratory
 
Turing publishes his Touring Test for determining machine intelligence
 
Assembly language developed
 
Other computers of 1950:
 
UNIVAC 1101
 
ADVIAC
 
IBM 607
 
SEAC (National Bureau of Standards)
1951
William Shockley invents the junction transistor. Reverse-engineered alien technology from Roswell? Inquiring minds want to know.
 
The first UNIVAC 1 computer, developed under the leadership of Grace Murray Hopper, is delivered to the US Census Bureau
 
Jay Forrester files a patent for matrix core memory.
 
The Whirlwind computer begins operations at M.I.T
 
IEEE Computer Society founded
 
A British catering firm, Lyons & Company, develops the first business computer, the Lyons Electronic Office (LEO) , based on research which they funded at Cambridge University. David Caminer becomes the world's first corporate systems analyst.
 
Other Computers of 1951:
 
Fairchild Computer
 
General Electric 100 ERMA
 
NBS SWAC (Sealed With A Kiss?)
 
Burroughs Lab Calculator
1952
Jay Forester develops magnetic memory at M.I.T.
 
The EDVAC (Electronic Discrete Variable Automatic Computer) is completed at Moore School by Mauchly, Eckert and Von Neumann
 
Grace Murray Hopper develops A-O, the first program compiler
 
A Univac I computer accurately predicts the outcome of the US presidential election, bringing computers to the attention of the general public,
 
The IAN computer begins operation at the Institute for Advanced Study at Princton Univ.
 
A core memory module is added to the ENIAC
 
Other Computers of 1952:
 
ORDVAC
 
EDVAC
 
ILLIAC (Univ. of Illinois)
 
And of course, someone had to come up with the MANIAC
 
Harvard Mark IV
 
Elcom 100
 
IAS
 
National 102
 
IBM 701
1953
Sperry Rand buys the patents to the UNIVAC and begins to market the UNIVAC 1103
 
The IBM 650, aka the Magnetic Drum Calculator, is introduced. It is the first mass-produced computer
 
Computers of 1953:
 
MIT Whirlwind II
 
NCR 107
 
IBM 604
 
IBM 701
 
UNIVAC 1102
 
RAYDAK
 
ALWAC II
 
OARAC
 
MINIAC
 
And the minimally named FLAC
1954
Gordon Teal develops transistors based on silicon
 
Texas Instruments begins commercial production of transistors
 
Other computers of `1954:
 
The acronyms start to get a little silly...
 
JOHNNIAC (Rand)
 
DYSEAC
 
ORDFIAC
 
LEPRECHAUN (Bell Labs)
 
Mellon Institute Digital Computer
 
Circle
 
Electro Data Datatron
 
MODAC 404
 
WISC
 
TIM II
1955
The ENIAC computer is decommissioned and shut down.
 
Other computers of 1955:
 
Monorobot III
 
IBM 702
 
RCA BIZMAC
 
NORC
 
Technitral 180
 
PENNSTAC
 
MIDAC
 
ALWAC III E
 
Elcom 125
1956
IBM builds the first hard drive. It contains fifty 24 inch disks, has a capacity of 5 MB and costs over US$1,000,000
 
The Nobel Prize in physics is awarded to John Bardeen, Walter Brattain, and William Shockley for their work on the transistor.
 
The first transistorized computer, the TX-O (Transistorized Experimental computer), is completed at M.I.T.
1957
IBM introduces RAMAC, a memory storage device based on rotating disks. It is the first hard disk storage.
 
The FORTRAN programmming language is developed by John Backus, an engineer at IBM.
 
The Atlas Guidance Computer, one of the first transistor computers, is used to control the launch of the Atlas missile.
 
The Musasino-1 computer is developed by Nippon Telegraph and Telephone Company. It is based on the principles of parametric excitation developed by Eiji Goto in 1954. A command in Basic programming will later be named after him.
1958
Commercial transistor computers make their first appearance
 
The UNIVAC Solid State 80 and the Philco S-2000 are introduced, beginning the second generation of electronic computers
 
The ALGOL 58 programing language is developed
 
Jack StClair Kilby and Robert Noyce of Texas Instruments develop the first integrated circuit (IC) or chip, which is a collection of miniature transistors
1959
This year marks the beginning of the second generation of computers - those which use transistors rather than tubes
 
IBM announces the IBM 1401 computer
 
RCA introduces the 501 computer. It is supplied with the new COBOL (COmmon Business Oriented Language) programming language
 
The Harvard Mark 1 is shut down
 
Both Fairchild Semiconductor and Texas Instruments announce the independent development of the integrated circuit (IC)
 
Fairchild Semiconductor files a patent for the planar process for manufacturing transistors which makes commercial production of transistors possible.
 
Robert Noyce of Fairchild builds an integrated circuit based on silicon, with metal conductors, transistors and resistors
 
John McCarthy develops the programming language LISP
 
Japan's NEC Corporation introduces their first commercial transistor computer, the NEAC 2201
 
Xerox introduces the first commercial copy machine
 
General Electric introduces the GE ERMA, the first machine to process checks encoded with magnetic ink characters
1960
IBM introduces the IBM 360, developed by Gene Amdahl
 
Ken Olsen, founder of DEC, introduces the PDP-1, the first computer with a keyboard and a monitor. It is priced at US$120,000
 
DEC introduces the PDP-8, the first mass produced minicomputer at the unheard-of low price of $20.0000
 
The Algol 60 programming language is developed
 
Remington Rand introduces the Livermore Advanced Research Computer (LARC) for use in scientific research. It uses 60,000 transistors
1961
Fairchild releases the first commercially produced integrated circuit.
 
MIT's Fernando Corbato develops a way for computer users to share computer time
 
The first robotic manufacturing device is patented by Georg C. Devol. It is used to automate manufacturing TV tubes.
 
IBM unveils the 7030 computer which is 30 times faster than its predecessor, the 704. The race for speed and power is on.
1962
Ivan Sutherland creates a graphics system called Sketchpad.
 
Teletype introduces its Model 33 keyboard and punched-tape terminal which is used for input-output on early microcomputers
 
IBM introduces magnetic disk storage for computers
 
The first video game is developed by grad student Steve Russell at MIT
 
The Atlas, the world's most powerful computer, is launched in Britain.
 
Joseph Weizenbaum develops Eliza, a computer program that simulates the responses of a psychiatrist.
1963
Douglas Engelbart receives a patent on the mouse pointing device for computers
 
Lofti Zadeh begins work on fuzzy logic at UC Berkeley
1964
Douglas Englebart develops a working mouse.
 
Gordon Moore suggests that integrated circuits would double in complexity every year. This later becomes known as Moore's Law.
 
The programming language, Basic (Beginner's All-purpose Symbolic Instruction Code), is developed by John Kemeny and Thomas Kurtz at Dartmouth College
 
IBM's SABRE airline reservation system is implemented
 
Control Data Corporation introduces the first supercomputer, the CDC6600, developed by Seymour Cray.
 
First fully automated, computer-controlled factory is inaugurated by Sara Lee
1965
DEC introduces the PDP-8, the first mini-computer. It is priced at the then-unheard of bargain price of US$18,500
1966
Steven Gray founds the Amateur Computer Society, and begins publishing the ACS Newsletter. This is considered by some to be the birthdate of personal computing
 
IBM introduces the first disk storage system, the IBM RAMAC 305. It holds 5 MB of data on 50 2-foot wide platters.
1967
The change from magnetic core memory to semiconductor memory begins
 
The LOGO programming language is developed
 
IBM develops the first floppy disk
 
Jack Kilby, John Merryman and James VanTassel develop the first four-function hand-held calculator
1968
Douglas Engelbart, of the Stanford Research Institute, demonstrates his system of keyboard, keypad, mouse, and windows at the Joint Computer Conference in San Francisco
1969
Dennis Ritchie and Kenneth Thompson begin work on the UNIX operating system at Bell Labs
 
Intel announces a 1 KB RAM chip, which has a significantly larger capacity than any previously produced memory chip.
 
William Gates and Paul Allen, calling themselves the "Lakeside Programming Group" sign an agreement with Computer Center Corporation to report bugs in PDP-10 software, in exchange for computer time.
 
At Xerox's research facility in Webster, New York, Gary Starkweather demonstrates the use of a laser beam with the xerography process to create a laser printer
1970
Bell Labs introduces UNIX
 
The first Automatic Teller Machine (ATM) is installed
 
Gilbert Hyatt files the first basic patent on the microprocessor
 
The floppy disk is introduced.
 
The daisywheel printer is introduced
1971
The first mass-produced microprocessor, the Intel 4004 processor, developed by Ted Hoff, is introduced. It can process four bits of data simultaneously at a rate 60,000 instructions per second and has its own arithmetic logic unit
 
Nolan Bushnell invents the videogame "Pong". It is wildly popular and makes him, in addition to a lot of money, the father of videogames,
 
The Kenback Corporation releases the Kenback-1, the first microcomputer kit, designed by John V. Blankenbaker.
 
Intel creates the 1103 chip, the first generally available DRAM memory chip
 
Nicklaus Wirth develops PASCAL, a structured programming language
 
The programming language FORTH is developed
 
Texas Instruments produces the first pocket calculator
1972
The Intel 8008 processor is introduced
 
The C programming language is developed at Bell Labs by Dennis Ritchie. It is called C because the previous version was called B. Real creative guys, those programmers...
 
Hand-held calculators become popular, rendering the slide rule instantly obsolete.
 
Xerox Parc's Learning Research Group develops the Smalltalk programming language.
 
Alain Colmerauer develops the Porlog language at University of Marseilles
 
DEC introduces the PDP 11/45
 
Wang introduces a word processing system
 
Liquid-crystal displays are introduced
1973
Steve Wozniak begins to build "Blue Boxes", tone generators to make free long-distance calls, and sells them in his dorm at Berkeley
 
Xerox Parc develops an experimental computer called Alto that uses Douglas Englebart's new mouse and features a Graphical User Interface. Unfortunately, they see no future in the personal computer.
 
Alan Kay also develops a forerunner of the PC that he calls an "office computer".
 
A federal judges invalidates Eckert and Mauchly's ENIAC patent and recognizes John V. Atanasoff as the inventor of the modern electronic computer.
1974
The Intel 8080 processor is introduced - it becomes the basis for the first personal computers
 
Steven Jobs and Stephen Wozniak start building computers in the Jobs' family garage.
 
An article in Radio Electronics provides plans for building a "personal minicomputer" called the Mark 8.
 
A chess-playing computer has its first match in Stockholm
1975
Ed Roberts, considered the father of the personal computer, designs the Altair 8800. It is produced by Micro Instrumentation and Telemetry Systems (MITS). Introduced in Popular Electronics magazine as a kit for $397, it becomes an overnight success.
 
Two young hacker geeks, William Gates and Paul Allen offer to build a BASIC compiler for MITS. This is the start of what will become Microsoft
 
Two other young hacker geeks, Steven Jobs and Stephen Wozniac build a computer in Steve's parents garage. They call it the Apple.
 
The first PC, the Altair 8800, is introduced in kit form and is featured in an article in Popular Electronics magazine. The response for orders is unexpectedly overwhelming.
 
The Zilog Z-80 computer is introduced. It has 8500 transistors and a clock speed of 2.5 MMz
 
MOS Technologies introduces the 6502 processor, selling for around $25. Jobs and Wozniak use it in the Apple II. It will later be used in the Commodore PET, Commodore 64 and early Atari computers.
 
IBM introduces the first laser printer
 
Fredrick Brooks publishes the theory that adding more people to a project which is late only makes it later.
 
The second personal computer, the IMSAI is introduced. Like the Altair, it lacks both keyboard and monitor and information is entered by switches. Unlike the Altair, it is targeted at businesses rather than hobbyists. The price for the kit is $450.
1976
The CRAY 1 supercomputer is introduced
 
The next entry into the personal computer market is the SOL, named after the Editor of Popular Electronics magazine.
 
Gary Killdall starts Digital Research and introduces the CP/M operating system.
 
IBM develops the ink jet printer.
 
Steven Jobs and Stephen Wozniak design and build the first Apple computers, the Apple 1, in the Jobs' family garage. It's not much more than a circuit board in a wooden box, but they build and sell 200 of them through Paul Terrell's Byte Shop. The price? $666.66
 
Stan Veit opens the Computer Mart of New York, the second computer store in the world.
1977
The Apple II computer is introduced at a trade show
 
The TRS-80 and Commodore computers are introduced at the same show
1978
The DEC VAX 11/780 computer is introduced
 
The concept of "office automation" is introduced with the WANG VS minicomputer system
 
Intel introduces the 8086 chip with 29,000 transistors. Shortly after, they introduce the 8088 chip
 
Dan Bricklin and Bob Frankston write VisiCalc, the first electronic spreadsheet
 
The Wordstar word processing program is introduced for use on CP/M systems. It is later modified to run on DOS systems.
1979
Don Bricklin and Bob Franston develop VisiCalc, the first electronic spreadsheet program.
 
Motorola introduces the 68000 chip which will be used in Macintosh computers
 
Cellular telephones are first tested in Japan and Chicago
1980
IBM hires Microsoft to develop an operating system for their proposed personal computer. Gates and company develop MS-DOS and take the first steps on their way to obscene riches.
 
The Sinclair ZX80 introduced into the UK. First under £100 Computer
 
By the end of the year, over 120,000 Apple computers have been sold.
 
The ADA programming language, named after Ada Byron, Lady Lovelace, is developed by the US Department of Defense.
 
Osborne introduces the first "portable" computer, the Osborne 1. It weighs 24 pounds and is the size of a suitcase.
1981
IBM introduces their personal computer using an operating system developed by the fledgling Microsoft Corporation
 
The first successful portable computer, The Osborne 1, is introduced
 
The price of technology is dropping. 256k of RAM can be had for only $1100, and a 5 MB hard disk costs $3000. 300 MB hard disks start at about $15,000
 
Apple introduces the ill-fated Lisa computer which lists for nearly $10,000
 
Intel introduces the 80286 chip with six times the computing power of the 8086
 
Xerox introduces a commercial version of their experimental Alto computer. It is called the Xerox Star.
 
Computer chips are first installed in automobiles
1982
Sony announces the Compact Disk
 
Mitchell Kapor designs Lotus 1-2-3
 
The first IBM PC "clone" is produced by Columbia Dara Products.
 
Compaq introduces its PC "clone"
 
John Warnock develops PostScript
 
Two Cray-1 computers are linked together in parallel and prove to be three times as fast as a single Cray-1. This new supercomputer is called the Cray X-MP.
1983
Microsoft announces the Windows operating system, a poor imitation of Apple's graphical user interface. It will be two years before the public sees the actual product
 
The first "laptop" computer, the TRS-80 Model 100
 
IBM introduces the the PC/AT
 
Michael Dell begins building computers in his college dorm room.
 
The Lotus 1-2-3 spreadsheet program is released for the IBM PC
 
IBM introduces the PC-XT
 
Apple launches the ill-fated Lisa computer.
1984
Apple launches the Macintosh with a spectacular presentation at the 1984 Super Bowl games.
 
Apple introduces its MacPaint program.
 
Motorola introduces the 68020 chip for Apple computers. It features 250,000 transistors on a postage stamp sized chip.
 
Microsoft releases DOS 3.0
 
Commodore introduces the Amiga
 
Musical Instrument Digital Interface (MIDI) standards arte developed for interfacing computers with digital music synthesizers.
 
Sony and Phillips jointly introduce the CD-ROM
 
The movie The Last Starfighter is released. It uses graphics and images generated by a supercomputer.
 
Intel introduces its 16 bit 80286 chip which greatly expands the capabilities of PC's
1985
Aldus introduces desktop publishing with its PageMaker software
 
Intel introduces the 80386 or "386" chip with over 250,000 transistors
 
Steve Jobs leaves Apple and starts NeXT Computer
 
Microsoft finally releases the Windows operating system.
 
Aldus releases Paul Brainard's Pagemaker, the first desktop publishing program.
1986
Compaq introduces the DeskPro 386, the first computer to use the 80386 chip
 
Microsoft introduces DOS 3.3
 
DESQView, TopView and GEM Desktop challenge Mr.Bill's Windows operating system
 
Sun introduces its first SPARC RISC (Reduced Instruction Set Computer) CPU
 
Intel introduces the 80386 chip
1987
Adobe joins the destop publishing fray with Postscript
 
IBM introduces the OS/2 operating system
 
Microsoft ships Windows 2.0
1988
The Year 2000 problem is first mentioned in print
 
PERL, a programming language is developed.
 
Steve Jobs introduces his new computer, the NeXTcube, with an object-oriented operating system
1989
Intel introduces the 80486 chip, the first microprocessor with over 1,000,000 transistors and a built-in math coprocessor
 
Microsoft introduces Word for Windows
 
Seymour Cray begins to develop the Cray 3.
1990
Microsoft ships Windows 3.0, a second-rate, Mac-lookalike operating system.
 
Bell Labs demonstrates the first all-optical processor
 
Hewlett-Packard and IBM announce RISC-based computers
 
Motorola releases the 68040 chip
 
Cray introduces the Cray Y-MP C90 with 16 processors and a speed of 16 gigaflops (love that word!)
1991
Windows 3.1 appears. It is the first relatively stable Windows operating system
 
The JPEG (Joint Photographic Experts Group) graphics compression format is released.
 
QuickTime, a video compression format developed by Apple, is released.
 
Apple, IBM and Motorola form an alliance to develop and promote the PowerPC platform.
1992
There are now about 1000 known computer viruses, up from 5 in 1988
 
Linux, a new PC operating system created by
 
DEC introduces the first 64 bit RISC Alpha chip
1993
Apple, IBM and Motorola announce the availablillity of the Power PC
 
DEC introduces the Alpha AXP chip
 
Intel announces the Pentium chip which has 3.1 million transistors and is able to perform 112 million instructions per second (MIPS)
 
Laptop computers get CD-ROM drives
 
The MPEG (what the hell does it stand for?) video compression format is released. This makes it feasible to broadcast video on Web sites.
 
The first Geek Code is developed
 
The first version of the computer game DOOM is released upon an unsuspecting world of gamers. The world will never be the same again.
 
Apple introduces the Newton, the first successful Personal Digital Assistant (PDA). It's not so hot, but it's still better than anything else.
1994
IBM releases OS/2 Warp 3.0
 
Microsoft releases Windows 95
1995
Toy Story is the first full-length feature film to be completely computer generated.
 
Sun releases the Java programming language which makes platform-independent programming possible.
 
Intel introduces the Pentium Pro chip with 5.5 million transistors.
1996
Microsoft introduces its lame version of a browser, Internet Explorer 3.0
 
DVD disks
1997
Apple releases the Macintosh OS-8 system
1998
Apple releases the iMac

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Updated Last:

History of Computers

Click here to edit this article
The Sinclair ZX80

The History of Computers started with human nature wanting to control and count important items. It could be expected a cave man would count how many possession he had, to ensure that on his return he still had the same no. So computers start with the ability to under the volume of specific items we have.

Period
History of Computers
 
 
3000 BC
The abacus is invented in Babylonia
80 AD
The Antikythera Device, a bronze mechanical lunar month calculator, is constructed in Greece
1622
William Oughtred invents the slide rule. This first one was circular.
1623
Wilhelm Schickard designs the first known mechanical calculator, the "Calculating Clock" to multiply large numbers.
1642
Blaise Pascal invents an adding machine which he calls the Pascaline. It could perform addition and subtraction, but it was too expensive to be practical and only Pascal could keep it working
1666
Samuel Morland builds a mechanical calculator that will add and subtract
1674
Gottfried Leibnez, the man to blame for the invention of calculus, uses a stepped cylindrical gear to build his "Stepped Reckoner" which will both add and multiply
1679
Leibniz introduces binary mathematics
1774
Phillip-Malthus Hahn builds and sells a small number of calculating machines which are accurate to 12 digits
1777
The third Earl of Stanhope invents a multiplying calculator
1803-4
Joseph-Marie Jacquard invents an automated loom which uses punched cards to reproduce complex patterns.
1820
The first mass-produced calculating machine, Thomas de Colmar's Arithmometer, is marketed and continues in use for many years.
1822
Charles Babbage begins work on the Difference Engine
1829
The first typewriter is patented by William Austin Burt. It's slow and clumsy, but it's the first writing machine.
1831
The telegraph is invented
1832
Babbage completes a portion of his Difference Engine
1834
Babbage begins work on the Analytical Engine
1840
Lord Byron's daughter, Ada, Countess of Lovelace, suggests to Babbage that he use the binary system. She writes programs for his analytical engine, becoming the world's first programmer
1843
Ada translates Luigi Menabrea's theories of the analytical engine and adds her own commentary
1853
Scheutz invents the first printing calculator
1850's
George Boole develops Boolean Logic which will one day become the basis for computer logic.
1882
William S. Burroughs quits his job as a bank clerk and sets out to invent a reliable adding machine.
1890
Dr. Herman Hollerith introduces the first electro-mechanical punched-card data processing machine. It is used to compile information from the 1890 US census.
1892
Burroughs produces the first adding machine with a printer
1899
Magnetic recording is invented.
1901
Hollerith starts his own company, the Tabulating Machine Company, to market his data processing machines.
1906
William DeForest invents the vacuum tube
1917
Aberdeen Proving Grounds begins computing ballistics tables
1919
Two American physicists, Eccles and Jordan, invent the flip-flop circuit which will be necessary for high-speed electronic calculating.
1928
IBM adopts the 80 column punched card - used for the next 50 years
 
Teletypewriters and teleprinters come into limited use in Britain, Germany and the US
1930
Vannevar Bush builds the differential analyzer at M.I.T.
1934
The Moore School differential analyzer is completed
1935
IBM introduces the electric typewriter
1936
Konrad Zuse applies for a patent on his mechanical memory
 
Alan Turing publishes On Computable Numbers which lays a theoretical foundation for computer principles
1937
George Stibitz builds his model K, which demonstrates the feasibility of mechanizing binary math
1938
Konrad Zuse completes his Z1 calculating machine
1939
John Atanasoff begins work on his ABC computer
 
Howard Aiken begins work on the Harvard Mark 1 with funding from IBM
1940
Zuse introduces his Z1, the first programmable calculating machine to use the binary system. It is used to solve complex engineering equations
 
Bell Labs' George Stibitz and Samuel Williams complete the Complex Number Computer, later known as the Bell Labs Model 1.
 
Stibittz later demonstrates the Model 1 at Dartmouth College with a terminal in New Hampshire and the Model 1 in New York
1941
Zuse completes his Z3, the first program-controlled electromechanical digital computer.
 
In Britain, Alan Turing, M.H.A. Newman and Tommy Flowers complete work on the Colossus, the first all-electronic calculating machine. It is used during WWII to break German codes.
1942
John Mauchly and J.Presper Eckert propose a digital electronic version of Vannevar Bush's differential analyzer.
1943
Howard Aiken and staff at IBM's Endicott Labs complete the Harvard Mark 1, an automatic digital sequence-controlled computer.
 
The US government funds Mauchly and Eckert and work begins on the ENIAC (Electrical Numerical Integrator and Calculator)
 
In Britain, the Colossus computer is completed and set to work breaking German codes
 
Project Whirlwind, an analog flight simulator, is begun at M.I.T.
1944
The first tests of ENIAC. The US government extends funding to cover research on the EDVAC (Electronic Discrete Variable Computer), a stored program computer.
 
The Harvard Mark I, designed and built by Howard Aiken and his team of engineers, becomes operational.
1945
The ENIAC is up and running.
 
Zuse completes his Z4
 
The first computer "bug" is found in the Harvard Mark I by Grace Murray Hopper. It is a moth which got into one of the relays and caused it to fail.
 
Vannevar Bush's prophetic essay, As We May Think, is published in the Atlantic Monthly.
1946
The public gets its first glimpse of the ENIAC in Philadelphia on Valentines Day
 
Herman (CPL Irwin?) Goldstine invents flowcharts
1947
The transistor is invented by William Shockley, John Bardeen and Walter Brattain at Bell Labs
 
Howard Aiken and his team finish work on the Harvard Mark II
 
The ENIAC is moved to Aberdeen Proving Grounds
 
Maurice V. Wilkes begins work on the EDSAC (Electronic Delay Storage Automatic Computer) at Cambridge University
1948
The Manchester Mark 1 is operational
 
IBM unveils the SSEC, the Selective Sequence Electronic Calculator
 
Shockley, Bardeen and Bratain patent the transistor
1949
The EDSAC is completed
 
Eckert & Mauchly's company completes the BINAC computer for Northrup Aviation
 
An Wang develops magnetic core memory
 
The Whirlwind computer, the first real-time computer, is developed by Jay Forrester and his team at MIT
 
J.Lyons and Company, a British catering firm develops the first business computer, the LEO (Lyons Electronic Office), as a result of research which they funded at Cambridge
1950
Turing completes the ACE, considered by many to be the first programmable digital computer, at Britain's National Physics Laboratory
 
Turing publishes his Touring Test for determining machine intelligence
 
Assembly language developed
 
Other computers of 1950:
 
UNIVAC 1101
 
ADVIAC
 
IBM 607
 
SEAC (National Bureau of Standards)
1951
William Shockley invents the junction transistor. Reverse-engineered alien technology from Roswell? Inquiring minds want to know.
 
The first UNIVAC 1 computer, developed under the leadership of Grace Murray Hopper, is delivered to the US Census Bureau
 
Jay Forrester files a patent for matrix core memory.
 
The Whirlwind computer begins operations at M.I.T
 
IEEE Computer Society founded
 
A British catering firm, Lyons & Company, develops the first business computer, the Lyons Electronic Office (LEO) , based on research which they funded at Cambridge University. David Caminer becomes the world's first corporate systems analyst.
 
Other Computers of 1951:
 
Fairchild Computer
 
General Electric 100 ERMA
 
NBS SWAC (Sealed With A Kiss?)
 
Burroughs Lab Calculator
1952
Jay Forester develops magnetic memory at M.I.T.
 
The EDVAC (Electronic Discrete Variable Automatic Computer) is completed at Moore School by Mauchly, Eckert and Von Neumann
 
Grace Murray Hopper develops A-O, the first program compiler
 
A Univac I computer accurately predicts the outcome of the US presidential election, bringing computers to the attention of the general public,
 
The IAN computer begins operation at the Institute for Advanced Study at Princton Univ.
 
A core memory module is added to the ENIAC
 
Other Computers of 1952:
 
ORDVAC
 
EDVAC
 
ILLIAC (Univ. of Illinois)
 
And of course, someone had to come up with the MANIAC
 
Harvard Mark IV
 
Elcom 100
 
IAS
 
National 102
 
IBM 701
1953
Sperry Rand buys the patents to the UNIVAC and begins to market the UNIVAC 1103
 
The IBM 650, aka the Magnetic Drum Calculator, is introduced. It is the first mass-produced computer
 
Computers of 1953:
 
MIT Whirlwind II
 
NCR 107
 
IBM 604
 
IBM 701
 
UNIVAC 1102
 
RAYDAK
 
ALWAC II
 
OARAC
 
MINIAC
 
And the minimally named FLAC
1954
Gordon Teal develops transistors based on silicon
 
Texas Instruments begins commercial production of transistors
 
Other computers of `1954:
 
The acronyms start to get a little silly...
 
JOHNNIAC (Rand)
 
DYSEAC
 
ORDFIAC
 
LEPRECHAUN (Bell Labs)
 
Mellon Institute Digital Computer
 
Circle
 
Electro Data Datatron
 
MODAC 404
 
WISC
 
TIM II
1955
The ENIAC computer is decommissioned and shut down.
 
Other computers of 1955:
 
Monorobot III
 
IBM 702
 
RCA BIZMAC
 
NORC
 
Technitral 180
 
PENNSTAC
 
MIDAC
 
ALWAC III E
 
Elcom 125
1956
IBM builds the first hard drive. It contains fifty 24 inch disks, has a capacity of 5 MB and costs over US$1,000,000
 
The Nobel Prize in physics is awarded to John Bardeen, Walter Brattain, and William Shockley for their work on the transistor.
 
The first transistorized computer, the TX-O (Transistorized Experimental computer), is completed at M.I.T.
1957
IBM introduces RAMAC, a memory storage device based on rotating disks. It is the first hard disk storage.
 
The FORTRAN programmming language is developed by John Backus, an engineer at IBM.
 
The Atlas Guidance Computer, one of the first transistor computers, is used to control the launch of the Atlas missile.
 
The Musasino-1 computer is developed by Nippon Telegraph and Telephone Company. It is based on the principles of parametric excitation developed by Eiji Goto in 1954. A command in Basic programming will later be named after him.
1958
Commercial transistor computers make their first appearance
 
The UNIVAC Solid State 80 and the Philco S-2000 are introduced, beginning the second generation of electronic computers
 
The ALGOL 58 programing language is developed
 
Jack StClair Kilby and Robert Noyce of Texas Instruments develop the first integrated circuit (IC) or chip, which is a collection of miniature transistors
1959
This year marks the beginning of the second generation of computers - those which use transistors rather than tubes
 
IBM announces the IBM 1401 computer
 
RCA introduces the 501 computer. It is supplied with the new COBOL (COmmon Business Oriented Language) programming language
 
The Harvard Mark 1 is shut down
 
Both Fairchild Semiconductor and Texas Instruments announce the independent development of the integrated circuit (IC)
 
Fairchild Semiconductor files a patent for the planar process for manufacturing transistors which makes commercial production of transistors possible.
 
Robert Noyce of Fairchild builds an integrated circuit based on silicon, with metal conductors, transistors and resistors
 
John McCarthy develops the programming language LISP
 
Japan's NEC Corporation introduces their first commercial transistor computer, the NEAC 2201
 
Xerox introduces the first commercial copy machine
 
General Electric introduces the GE ERMA, the first machine to process checks encoded with magnetic ink characters
1960
IBM introduces the IBM 360, developed by Gene Amdahl
 
Ken Olsen, founder of DEC, introduces the PDP-1, the first computer with a keyboard and a monitor. It is priced at US$120,000
 
DEC introduces the PDP-8, the first mass produced minicomputer at the unheard-of low price of $20.0000
 
The Algol 60 programming language is developed
 
Remington Rand introduces the Livermore Advanced Research Computer (LARC) for use in scientific research. It uses 60,000 transistors
1961
Fairchild releases the first commercially produced integrated circuit.
 
MIT's Fernando Corbato develops a way for computer users to share computer time
 
The first robotic manufacturing device is patented by Georg C. Devol. It is used to automate manufacturing TV tubes.
 
IBM unveils the 7030 computer which is 30 times faster than its predecessor, the 704. The race for speed and power is on.
1962
Ivan Sutherland creates a graphics system called Sketchpad.
 
Teletype introduces its Model 33 keyboard and punched-tape terminal which is used for input-output on early microcomputers
 
IBM introduces magnetic disk storage for computers
 
The first video game is developed by grad student Steve Russell at MIT
 
The Atlas, the world's most powerful computer, is launched in Britain.
 
Joseph Weizenbaum develops Eliza, a computer program that simulates the responses of a psychiatrist.
1963
Douglas Engelbart receives a patent on the mouse pointing device for computers
 
Lofti Zadeh begins work on fuzzy logic at UC Berkeley
1964
Douglas Englebart develops a working mouse.
 
Gordon Moore suggests that integrated circuits would double in complexity every year. This later becomes known as Moore's Law.
 
The programming language, Basic (Beginner's All-purpose Symbolic Instruction Code), is developed by John Kemeny and Thomas Kurtz at Dartmouth College
 
IBM's SABRE airline reservation system is implemented
 
Control Data Corporation introduces the first supercomputer, the CDC6600, developed by Seymour Cray.
 
First fully automated, computer-controlled factory is inaugurated by Sara Lee
1965
DEC introduces the PDP-8, the first mini-computer. It is priced at the then-unheard of bargain price of US$18,500
1966
Steven Gray founds the Amateur Computer Society, and begins publishing the ACS Newsletter. This is considered by some to be the birthdate of personal computing
 
IBM introduces the first disk storage system, the IBM RAMAC 305. It holds 5 MB of data on 50 2-foot wide platters.
1967
The change from magnetic core memory to semiconductor memory begins
 
The LOGO programming language is developed
 
IBM develops the first floppy disk
 
Jack Kilby, John Merryman and James VanTassel develop the first four-function hand-held calculator
1968
Douglas Engelbart, of the Stanford Research Institute, demonstrates his system of keyboard, keypad, mouse, and windows at the Joint Computer Conference in San Francisco
1969
Dennis Ritchie and Kenneth Thompson begin work on the UNIX operating system at Bell Labs
 
Intel announces a 1 KB RAM chip, which has a significantly larger capacity than any previously produced memory chip.
 
William Gates and Paul Allen, calling themselves the "Lakeside Programming Group" sign an agreement with Computer Center Corporation to report bugs in PDP-10 software, in exchange for computer time.
 
At Xerox's research facility in Webster, New York, Gary Starkweather demonstrates the use of a laser beam with the xerography process to create a laser printer
1970
Bell Labs introduces UNIX
 
The first Automatic Teller Machine (ATM) is installed
 
Gilbert Hyatt files the first basic patent on the microprocessor
 
The floppy disk is introduced.
 
The daisywheel printer is introduced
1971
The first mass-produced microprocessor, the Intel 4004 processor, developed by Ted Hoff, is introduced. It can process four bits of data simultaneously at a rate 60,000 instructions per second and has its own arithmetic logic unit
 
Nolan Bushnell invents the videogame "Pong". It is wildly popular and makes him, in addition to a lot of money, the father of videogames,
 
The Kenback Corporation releases the Kenback-1, the first microcomputer kit, designed by John V. Blankenbaker.
 
Intel creates the 1103 chip, the first generally available DRAM memory chip
 
Nicklaus Wirth develops PASCAL, a structured programming language
 
The programming language FORTH is developed
 
Texas Instruments produces the first pocket calculator
1972
The Intel 8008 processor is introduced
 
The C programming language is developed at Bell Labs by Dennis Ritchie. It is called C because the previous version was called B. Real creative guys, those programmers...
 
Hand-held calculators become popular, rendering the slide rule instantly obsolete.
 
Xerox Parc's Learning Research Group develops the Smalltalk programming language.
 
Alain Colmerauer develops the Porlog language at University of Marseilles
 
DEC introduces the PDP 11/45
 
Wang introduces a word processing system
 
Liquid-crystal displays are introduced
1973
Steve Wozniak begins to build "Blue Boxes", tone generators to make free long-distance calls, and sells them in his dorm at Berkeley
 
Xerox Parc develops an experimental computer called Alto that uses Douglas Englebart's new mouse and features a Graphical User Interface. Unfortunately, they see no future in the personal computer.
 
Alan Kay also develops a forerunner of the PC that he calls an "office computer".
 
A federal judges invalidates Eckert and Mauchly's ENIAC patent and recognizes John V. Atanasoff as the inventor of the modern electronic computer.
1974
The Intel 8080 processor is introduced - it becomes the basis for the first personal computers
 
Steven Jobs and Stephen Wozniak start building computers in the Jobs' family garage.
 
An article in Radio Electronics provides plans for building a "personal minicomputer" called the Mark 8.
 
A chess-playing computer has its first match in Stockholm
1975
Ed Roberts, considered the father of the personal computer, designs the Altair 8800. It is produced by Micro Instrumentation and Telemetry Systems (MITS). Introduced in Popular Electronics magazine as a kit for $397, it becomes an overnight success.
 
Two young hacker geeks, William Gates and Paul Allen offer to build a BASIC compiler for MITS. This is the start of what will become Microsoft
 
Two other young hacker geeks, Steven Jobs and Stephen Wozniac build a computer in Steve's parents garage. They call it the Apple.
 
The first PC, the Altair 8800, is introduced in kit form and is featured in an article in Popular Electronics magazine. The response for orders is unexpectedly overwhelming.
 
The Zilog Z-80 computer is introduced. It has 8500 transistors and a clock speed of 2.5 MMz
 
MOS Technologies introduces the 6502 processor, selling for around $25. Jobs and Wozniak use it in the Apple II. It will later be used in the Commodore PET, Commodore 64 and early Atari computers.
 
IBM introduces the first laser printer
 
Fredrick Brooks publishes the theory that adding more people to a project which is late only makes it later.
 
The second personal computer, the IMSAI is introduced. Like the Altair, it lacks both keyboard and monitor and information is entered by switches. Unlike the Altair, it is targeted at businesses rather than hobbyists. The price for the kit is $450.
1976
The CRAY 1 supercomputer is introduced
 
The next entry into the personal computer market is the SOL, named after the Editor of Popular Electronics magazine.
 
Gary Killdall starts Digital Research and introduces the CP/M operating system.
 
IBM develops the ink jet printer.
 
Steven Jobs and Stephen Wozniak design and build the first Apple computers, the Apple 1, in the Jobs' family garage. It's not much more than a circuit board in a wooden box, but they build and sell 200 of them through Paul Terrell's Byte Shop. The price? $666.66
 
Stan Veit opens the Computer Mart of New York, the second computer store in the world.
1977
The Apple II computer is introduced at a trade show
 
The TRS-80 and Commodore computers are introduced at the same show
1978
The DEC VAX 11/780 computer is introduced
 
The concept of "office automation" is introduced with the WANG VS minicomputer system
 
Intel introduces the 8086 chip with 29,000 transistors. Shortly after, they introduce the 8088 chip
 
Dan Bricklin and Bob Frankston write VisiCalc, the first electronic spreadsheet
 
The Wordstar word processing program is introduced for use on CP/M systems. It is later modified to run on DOS systems.
1979
Don Bricklin and Bob Franston develop VisiCalc, the first electronic spreadsheet program.
 
Motorola introduces the 68000 chip which will be used in Macintosh computers
 
Cellular telephones are first tested in Japan and Chicago
1980
IBM hires Microsoft to develop an operating system for their proposed personal computer. Gates and company develop MS-DOS and take the first steps on their way to obscene riches.
 
The Sinclair ZX80 introduced into the UK. First under £100 Computer
 
By the end of the year, over 120,000 Apple computers have been sold.
 
The ADA programming language, named after Ada Byron, Lady Lovelace, is developed by the US Department of Defense.
 
Osborne introduces the first "portable" computer, the Osborne 1. It weighs 24 pounds and is the size of a suitcase.
1981
IBM introduces their personal computer using an operating system developed by the fledgling Microsoft Corporation
 
The first successful portable computer, The Osborne 1, is introduced
 
The price of technology is dropping. 256k of RAM can be had for only $1100, and a 5 MB hard disk costs $3000. 300 MB hard disks start at about $15,000
 
Apple introduces the ill-fated Lisa computer which lists for nearly $10,000
 
Intel introduces the 80286 chip with six times the computing power of the 8086
 
Xerox introduces a commercial version of their experimental Alto computer. It is called the Xerox Star.
 
Computer chips are first installed in automobiles
1982
Sony announces the Compact Disk
 
Mitchell Kapor designs Lotus 1-2-3
 
The first IBM PC "clone" is produced by Columbia Dara Products.
 
Compaq introduces its PC "clone"
 
John Warnock develops PostScript
 
Two Cray-1 computers are linked together in parallel and prove to be three times as fast as a single Cray-1. This new supercomputer is called the Cray X-MP.
1983
Microsoft announces the Windows operating system, a poor imitation of Apple's graphical user interface. It will be two years before the public sees the actual product
 
The first "laptop" computer, the TRS-80 Model 100
 
IBM introduces the the PC/AT
 
Michael Dell begins building computers in his college dorm room.
 
The Lotus 1-2-3 spreadsheet program is released for the IBM PC
 
IBM introduces the PC-XT
 
Apple launches the ill-fated Lisa computer.
1984
Apple launches the Macintosh with a spectacular presentation at the 1984 Super Bowl games.
 
Apple introduces its MacPaint program.
 
Motorola introduces the 68020 chip for Apple computers. It features 250,000 transistors on a postage stamp sized chip.
 
Microsoft releases DOS 3.0
 
Commodore introduces the Amiga
 
Musical Instrument Digital Interface (MIDI) standards arte developed for interfacing computers with digital music synthesizers.
 
Sony and Phillips jointly introduce the CD-ROM
 
The movie The Last Starfighter is released. It uses graphics and images generated by a supercomputer.
 
Intel introduces its 16 bit 80286 chip which greatly expands the capabilities of PC's
1985
Aldus introduces desktop publishing with its PageMaker software
 
Intel introduces the 80386 or "386" chip with over 250,000 transistors
 
Steve Jobs leaves Apple and starts NeXT Computer
 
Microsoft finally releases the Windows operating system.
 
Aldus releases Paul Brainard's Pagemaker, the first desktop publishing program.
1986
Compaq introduces the DeskPro 386, the first computer to use the 80386 chip
 
Microsoft introduces DOS 3.3
 
DESQView, TopView and GEM Desktop challenge Mr.Bill's Windows operating system
 
Sun introduces its first SPARC RISC (Reduced Instruction Set Computer) CPU
 
Intel introduces the 80386 chip
1987
Adobe joins the destop publishing fray with Postscript
 
IBM introduces the OS/2 operating system
 
Microsoft ships Windows 2.0
1988
The Year 2000 problem is first mentioned in print
 
PERL, a programming language is developed.
 
Steve Jobs introduces his new computer, the NeXTcube, with an object-oriented operating system
1989
Intel introduces the 80486 chip, the first microprocessor with over 1,000,000 transistors and a built-in math coprocessor
 
Microsoft introduces Word for Windows
 
Seymour Cray begins to develop the Cray 3.
1990
Microsoft ships Windows 3.0, a second-rate, Mac-lookalike operating system.
 
Bell Labs demonstrates the first all-optical processor
 
Hewlett-Packard and IBM announce RISC-based computers
 
Motorola releases the 68040 chip
 
Cray introduces the Cray Y-MP C90 with 16 processors and a speed of 16 gigaflops (love that word!)
1991
Windows 3.1 appears. It is the first relatively stable Windows operating system
 
The JPEG (Joint Photographic Experts Group) graphics compression format is released.
 
QuickTime, a video compression format developed by Apple, is released.
 
Apple, IBM and Motorola form an alliance to develop and promote the PowerPC platform.
1992
There are now about 1000 known computer viruses, up from 5 in 1988
 
Linux, a new PC operating system created by
 
DEC introduces the first 64 bit RISC Alpha chip
1993
Apple, IBM and Motorola announce the availablillity of the Power PC
 
DEC introduces the Alpha AXP chip
 
Intel announces the Pentium chip which has 3.1 million transistors and is able to perform 112 million instructions per second (MIPS)
 
Laptop computers get CD-ROM drives
 
The MPEG (what the hell does it stand for?) video compression format is released. This makes it feasible to broadcast video on Web sites.
 
The first Geek Code is developed
 
The first version of the computer game DOOM is released upon an unsuspecting world of gamers. The world will never be the same again.
 
Apple introduces the Newton, the first successful Personal Digital Assistant (PDA). It's not so hot, but it's still better than anything else.
1994
IBM releases OS/2 Warp 3.0
 
Microsoft releases Windows 95
1995
Toy Story is the first full-length feature film to be completely computer generated.
 
Sun releases the Java programming language which makes platform-independent programming possible.
 
Intel introduces the Pentium Pro chip with 5.5 million transistors.
1996
Microsoft introduces its lame version of a browser, Internet Explorer 3.0
 
DVD disks
1997
Apple releases the Macintosh OS-8 system
1998
Apple releases the iMac

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