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Bell Labs Complex Computer

Computer/ Day in Tech History

January 8, 1940: Bell Labs Complex Computer

Jeffrey Powers @geekazine aggregator, consensus, day in tech history, doj, herman hollerith, herman hollerith tabulating machine, hollerith tabulating machine, IBM, iTunes, netgear, night trap, palm, patent, Podcast, punch card system, RSS, statistics, stitcher, Tabulating machine, technology history, video game industry 0 Comments January 7, 2019

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Bell Labs Complex Computer
Bell Labs Complex Computer

1940 – a full-scale relay calculator designed by Bell Labs engineer Dr. George Stibitz, becomes operational. The machine was first designed in February 1938, and construction began in April, 1939. Although the device was ready by October, 1939, it didn’t go into operation until this day.

The Complex Computer used 400-450 binary relays and initially could only run complex multiplication and division. The machine had to be modified to do addition and subtraction. In September, the device was connected to phone lines, sending information to a teletype unit.

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