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Johnniac computer, Computer History Museum, California

The JOHNNIAC was an early computer built by the RAND Corporation (not to be confused with Remington Rand, maker of the contemporaneous UNIVAC I computer) that was based on the von Neumann architecture that had been pioneered on the IAS machine. It was named in honor of von Neumann, short for John v. Neumann Numerical Integrator and Automatic Computer.[1] JOHNNIAC is arguably the longest-lived early computer, being used almost continuously from 1953[2] for over 13 years before finally being shut down on February 11, 1966, logging over 50,000 operational hours.



JOHNNIAC weighed 5,000 pounds (2.5 short tons; 2.3 t).[3]




See alsoEdit


  1. ^ Kaisler, Stephen H. (2017-06-20). "Chapter Six JOHNNIAC". Birthing the Computer: From Drums to Cores. Cambridge Scholars Publishing. p. 120. ISBN 9781443896252. 
  2. ^ . Digital_Computer_Newsletter_V05N04_Oct53.pdf. "1. The Rand Junior Johnniac". DIGITAL COMPUTER NEWSLETTER. 5 (4): 2. October 1953. 
  3. ^ Weik, Martin H. (December 1955). "JOHNNIAC". A Survey of Domestic Electronic Digital Computing Systems.