Harvard Mark II Machine definition computer, history
-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 (http://hoc.co.umist.ac.uk/storylines/compdev/electromechanical/harvardmarkmachines.html).