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A Brief History of Computer Development: From Abacus to Modern Microprocessors

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Explore the fascinating evolution of computers, beginning with the ancient abacus (500 BC) through Blaise Pascal's Pascaline (1642) and the groundbreaking punch cards of Joseph Jacquard (1801). Delve into Charles Babbage's Difference and Analytical Engines and the innovations of Ada Lovelace, the first programmer. The transition from vacuum tubes to transistors and finally to integrated circuits showcases significant milestones, including the introduction of UNIVAC, PDP-1, and the rise of personal computers in the late 20th century.

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A Brief History of Computer Development: From Abacus to Modern Microprocessors

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Presentation Transcript

  1. History Computers

  2. Development of Computers • Abacus (500 BC)

  3. Pascaline (1642) - Blaise Pascal

  4. Punch cards (1801) - Joseph Jacquard

  5. Difference Engine/Analytical Engine (1822) - Charles Babbage

  6. First programmer - Ada Augusta Lovelace

  7. Census Bureau (1890) - Herman Hollerith

  8. ABC by Atanasoff & Berry

  9. General Purpose Computers • ENIAC by Mauchly & Eckert • First computer based entirely on vacuum tubes

  10. EDVAC by von Neumann Improved programming requirements of ENIAC Stored program concept

  11. First Generation • 1951 – 1958 • Vacuum tubes • UNIVAC I (1951) • First computer built for a data processing application • Punched cards • Machine language being replaced by assembly language • FORTRAN

  12. Vacuum Tubes

  13. Second Generation • 1959 – 1963 • Transistors • DEC introduced PDP-1 (1960) • First minicomputer • IBM began work on System 360 series (1961) • Magnetic tapes and disks • COBOL, Basic, and PL1

  14. Transistors

  15. Third Generation • 1964 – 1970 • Integrated circuits • Circuits reside on a single chip • IBM introduced System 360 series (1964) • RPG and Pascal

  16. Integrated Circuits

  17. Fourth Generation • 1971 – ??? • LSI and VLSI • Many circuits on a single chip • Development of microprocessor by Intel (1971) • Ted Hoff • MITS, Inc. – first commercially successful microcomputer (1975) • Apple II (1977), Tandy’s TRS-80 (1979), IBM PC (1981) • Ada

  18. LSI

  19. ? Next Generation ?

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