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  • IBM 650

650 Reference room

  • 650 Chronology
    A brief history of the 650

  • 650 Feeds & speeds
    Facts, figures and features

  • 650 Components
    The components & associated equipment of a 650 installation

  • 650 Customers
    A representative listing of 650 installations

  • 650 Applications
    How the 650 was used

  • Basic information sources:
    • Magnetic Drum Data Processing Machine announcement press release; July 14, 1953

    • IBM 650 Technical fact sheet; July 20, 1955

    • 650 RAMAC announcement press release; Sept. 14, 1956

    • 650 RAMAC fact sheet; Sept. 14, 1956

    • IBM 650 Magnetic Drum Data Processing Machine applications press release; July 31, 1958

    • IBM 650 Model 4 announcement press release; June 18, 1959

    • 650 RAMAC fact sheet; ca. 1959

  • 650 Photo album
    Views of the 650 & its components

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