Mark I relay calculator

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Date
1940
Credit Line
Reprinted with permission of Alcatel-Lucent USA Inc.
Copyright Owner
© Alcatel-Lucent USA Inc.
Object ID
102630434

Bell Labs researchers Samuel Williams and George Stibitz built the Model I Relay Calculator with 450 electromagnetic relays. In September 1940, a teletype set up at a mathematics conference at Dartmouth College enabled remote use of this computer.