Basic Computer Notions Computer trends

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Vacuum tubes (cont'd)

The History of Computing at BRL

The first electronic programmable calculator, ENIAC, was built in 1946: electronic. 19,000 vacuum tubes, 30 tons, 1000 sq ft, consumed ~190kW; clock speed 100kHz, ~6000 additions/sec. Binary circuits but not binary number representation; no central memory unit.

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Last modified: Thu, 2009 Jan 15 16:36:53

Slide show generated from trends.html by Weasel 2009 Jan 15