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Happy Birthday, UNIVAC I

Posted by Hemos on from the that's-a-lot-of-candles dept.

Daniel Goldman writes "Today is the 53rd birthday of the UNIVAC I (UNIVersal Automatic Computer I). The UNIVAC I was delivered to the Census Bureau in 1951. It weighed some 16,000 pounds, used 5,000 vacuum tubes, and could perform about 1,000 calculations per second. It was the first American commercial computer, as well as the first computer designed for business use. The first few sales were to government agencies, the A.C. Nielsen Company, and the Prudential Insurance Company. It could retain a maximum of 1000 numbers and was able to add, subtract, multiply, divide, sort, collate and take square and cube roots. Its transfer write/read to and from magnetic tape was 10,000 characters per second."

2 of 241 comments (clear)

  1. Some more specs/info by fuzzix · · Score: 5, Informative

    from the venerable old-computers.com

  2. Re:where is it now? - Dino-iron is not extinct yet by xmark · · Score: 5, Informative

    Here's a great freeware UNIVAC simulator you can use until you get your own UNIVAC off eBay. MTBF on those babies was somewhere around 10 hours due to the use of vacuum tubes...hopefully your PC running this sim will post somewhat better reliability numbers. :D If you'd like to see some dino-iron in person, a similar-era ENIAC resides in a basement museum in the Engineering School at the University of Michigan. This page is full of good information and links. Also, check out this list if you're interested in restorations of other ancient machines such as Crays and Cybers; my favorites are the Royal-McBee LGP 21 and 30 machines, immortalized in the Jargon File mythologies about Real Programmers. Read The Story of Mel and be enlightened (as well as entertained) about how a True Master thinks when dealing with the limitations of old hardware. It's so Zen it will make you clap with one hand.