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ARRA (computer)

First Dutch computer From Wikipedia, the free encyclopedia

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The ARRA (Automatische Relais Rekenmachine Amsterdam; Automatic Relay Calculator Amsterdam) was the first Dutch computer, and was built from relays for the Dutch Mathematical Centre (Mathematisch Centrum), which later became the Centrum Wiskunde & Informatica (CWI).

Computer

It was designed and built by Carel Scholten and Bram Loopstra, and was finished in 1952. Because of reliability problems it was soon taken out of commission, and "updated" to the ARRA II, which actually was a completely new design. In December 1953, electronic[1] ARRA II performed its first programs and was completed in 1954.[2][3][4]

Subsequent computers

Other computers designed and built at the Mathematical Centre:

  • FERTA (computer)
  • ARMAC (computer), 1956[5]

Other very early Dutch computers:

References

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