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Konrad Zuse created the first programmable computer, which he named the V1 and was later renamed as Z1.
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At Iowa State College, later called Iowa State University, Professor Atanasoff and Cliff Berry designed and constructed the ABC or Atanasoff-Berry Computer, in which was capable of binary math and Boolean logic.
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Created by J. Eckert and John Mauchly, the ENIAC or Electronic Numerical Integrator and Calculator, was used during World War II by the U.S. Army's Ballistic Research Laboratory.
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J. Eckery and Mauchly founded the Electronic Controls Company, which was changed to Eckert-Mauchly Computer Corporation.
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In 1949, Maurice Wilkes built EDSAC or Electronic Delay Storage Automatic Calculator at the University of Cambridge.
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Between the years 1954 and 1983, companies such as Toshiba, NEC, Dell, and Commodore created their own computers like the TAC digital computer, the NEAC 1101, Turbo PC, and Commodore PET, respectively.
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Massachusetts Institute of Technology invented the first computer with a magnetic core RAM called the Whirlwind machine.
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The first transistor computer, the TX-0, was created at MIT's Lincoln Laboratory. This is the first computer to use transistors rather than vacuum tubes.
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In 1960, the company DEC constructed a computer that utilizes a cathode ray tube graphic display and one operator. MIT used the computer to make the first computerized video game.
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Xerox Alto was the first workstation that included a computer, display, and interface. No one, however, bought the workstation.
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The first personal computer is the KENBAK-1, which was developed in 1971, even though the phrase "personal computer" was invented in 1975 for the Altair 8800.
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The first laptop is the IBM 5100, which was about 55 lbs. In 1981, Adam Osborne released the Osborne I laptop that weighed 24 lbs, which is less than the IBM 5100 and IBM's second portable computer that weighed 30 lbs.
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In 1976, Steve Wozniak developed Apple's first computer, the Apple I, which could not function outside of its case.
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IBM manufactured the IBM PC in 1981, nearly thirty years after creating its first electric and mass produced computer, the 701.
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In 1983, Compaq developed the Compaq Portable, which had IBM software.
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After the development of the M2500 XL/2 and M4020 SX computers, Tandy Radio Shack created the first multimedia computer.
