ORy> 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 (http://hoc.co.umist.ac.uk/stORylines/compdev/electromechanical/harvardmarkmachines.html)}. (2003-09-13)