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History of Computers

History of Computers. Over 5,000 years ago…. 1600’s. Blaise Pascal Pascaline Gottrfried von Leibniz Improved on Pascaline. 1600’s. Pascaline. Blaise Pascal. Early 1800’s. Joseph Marie Jacquard Jacquard’s Loom Charles Xavier Thomas Arithometer. Early 1800’s. Jacquard’s Loom.

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History of Computers

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  1. History of Computers

  2. Over 5,000 years ago…

  3. 1600’s • Blaise Pascal • Pascaline • Gottrfried von Leibniz • Improved on Pascaline

  4. 1600’s Pascaline Blaise Pascal

  5. Early 1800’s • Joseph Marie Jacquard • Jacquard’s Loom • Charles Xavier Thomas • Arithometer

  6. Early 1800’s Jacquard’s Loom

  7. Mid-1800’s Charles Babbage Countess Ada Lovelace

  8. Mid 1800’s Analytical Engine

  9. Late 1800’s

  10. 1945 - 1956 • First Generation Computers • Used Vacuum tubes • Each computer had its own machine language • Examples: • Colossus • ENIAC • UNIVAC

  11. 1945 - 1956 ENIAC

  12. 1945 - 1956 UNIVAC

  13. 1945 - 1956 • Term “Computer Bug” coined by Admiral Grace Hopper

  14. 1956 - 1963 • Second Generation Computers • Transistors replaced vacuum tubes • Era of the punch cards • Examples • LARC • Stretch • IBM 1401

  15. 1956 - 1963 IBM 7094 IBM 1401

  16. 1964 - 1971 • Third Generation Computers • Integrated Circuits replaced transistors • Operating System used • Examples • IBM System 360 • Cray

  17. 1964 - 1971 Cray 23 Cray 29

  18. 1964 - 1971 IBM System 360

  19. 1971 - present • Fourth generation computers • Large Scale Integration (LSI) • Very Large Scale Integration (VLSI) • Ultra Large Scale Integration (ULSI) • Era of the Personal Computer • Pioneering Examples • Commodore • Radio Shack • Apple • IBM

  20. 1971 - present Dell Dimension 8200 IBM PC 1

  21. 1971 - present • ASCI White • Most powerful computing platform ever built! • 12.3 TeraOps (12,300,000,000,000 operations per second)

  22. 1971 - present • 1981 – 2 million computers in use • 1982 – 5.5 million computers in use • 1992 – 65 million personal computers

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