Computer History

By zoeygirl01

  • Bell Laboratories

    Bell Laboratories
    Invention: Model "K" Adder
    Date: 1937
    Inventor: George Stibitz
    Brief Description: Model K was built in George's kitchen on the table. This is a demonstration circuit which shows the design of the computers.
  • Period: to

    Computer History 1937-1947

  • Hewlett and Packard

    Hewlett and Packard
    Invention: HP 200A Audio Oscillator
    Date: 1939
    Inventor: Bill Hewlett and David Packard
    Brief Description: This was a popular test equipment for engineers. Walt Disney bought eight of the 200B for test recordings.

  • The Complex Number Calculator (CNC)

    The Complex Number Calculator (CNC)
    Invention: Complex Number Calculator
    Date: 1940
    Inventor: George Stibitz
    Brief Description: Designed in 1940 for the American Mathematical Society Conference at Dartmouth College. This is likely the first example of remote access computing.

  • Public unveiling of ENIAC

    Public unveiling of ENIAC
    Invention: ENIAC
    Date: 1943
    Inventor: John Mauchly and J. Presper Eckert
    Brief Description: Electronic Numerical Integrator and Computer (ENIAC) was built at the Moore School of Electrical Engineering at the University of Pennsylvania. The ENIAC used panel-to-panel wiring and switches for the programming, and it occupied over 1,000 sq. feet weighed 30 tons, and used 18,000 vacuum tubes.

  • The Colossus at Work at Bletchley Park

    The Colossus at Work at Bletchley Park
    Invention: The Colossus at Work
    Date: 1944
    Inventor: Tommy Flowers- British Engineer
    Brief Description: The Colossus was designed to break the complex Lorenz Ciphers used by the Nazis during World War II. The machines's existence was not made public until the 1970's.