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Encyclopedia > IBM CPC
IBM logo

The IBM Card-Programmed Electronic Calculator or CPC was announced by IBM in May 1949. Later that year an improved machine, the CPC-II was also announced. Image File history File links IBM_logo. ... International Business Machines Corporation (IBM, or colloquially, Big Blue) NYSE: IBM (incorporated June 15, 1911, in operation since 1888) is headquartered in Armonk, NY, USA. The company manufactures and sells computer hardware, software, infrastructure services and consulting services. ... 1949 (MCMXLIX) is a common year starting on Saturday. ...


The original CPC Calculator had the following machines interconnected by cables:

  • Electronic Calculating Punch
    • IBM 604 with reader/punch unit IBM 521
  • Accounting Machine
    • IBM 402 or
    • IBM 417

The CPC-II Calculator had the following machines interconnected by cables: The IBM 604 was a plug-board programmable Electronic Calculating Punch introduced in 1948, and was a machine on which considerable expectations for the future of IBM were pinned and in which a corresponding amount of planning talent was invested. ...

  • Electronic Calculating Punch
    • IBM 605 with punch unit IBM 527
  • Accounting Machine
  • Optional Auxiliary Storage Unit
    • IBM 941

The IBM 407 Accounting Machine was the culmination of a long line of IBM tabulating equipment, dating back to the days of Herman Hollerith. ...

External links

  • The IBM Card Programmed Calculator at Columbia
  • Card-Programmed Electronic Calculator (CPC)
  • Documentation on CPC

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