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The History of Computers Dr. Ray Cafolla

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The History of Computers Dr. Ray Cafolla Ancient “Computers” Fingers and toes Stones Abacus (3000 bc) The Abacus The Forerunners of Computers 1620 Napier's bones 1642 Blaise Pascal (Pascaline) The Forerunners of Computers 1670 Leibnitz’ Stepped Reckoner The Difference Engine

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ancient computers
Ancient “Computers”
  • Fingers and toes
  • Stones
  • Abacus (3000 bc)
the forerunners of computers
The Forerunners of Computers
  • 1620 Napier's bones
  • 1642 Blaise Pascal (Pascaline)
the forerunners of computers5
The Forerunners of Computers
  • 1670 Leibnitz’ Stepped Reckoner
three generations of computer
Three Generations of Computer
  • 1951-1958 first generation (vacuum tubes)
three generations of computer10
Three Generations of Computer
  • 1959-1964 second generation computer (transistors)
three generations of computer11
Three Generations of Computer
  • 1965-1970 third generation computers (integrated circuits – ICs)
the post war boom
The Post War Boom
  • Johnny von Neuman (1945)
  • Alan Turing (1946) Enigma
  • 1951 UNIVAC (Universal Automatic Computer)
modern computers
Modern Computers
  • 1965 Third generation computers
  • 1975 Fourth generation computers

(Microcomputers)

  • Now Multimedia, artificial intelligence
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