Harvard Mark II Machine

Harvard Mark II Machine

(computer, history)
A relay-based computer designed and built by Howard Aiken, with support from IBM, for the United States Navy's Naval Proving Ground, between 1942 - 1947. The Harvard Mark II was the second in a series of four electro-mechanical computers that were forerunners of the ENIAC.

Harvard machines.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)
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According to Hopper, one of the technicians in her team solved a glitch in the Harvard Mark II machine (an electromechanical computer used by the US Navy for gunnery and ballistic calculations) by pulling an actual insect out from between the contacts of one of its relays with a pair of tweezers.

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