John Adam Presper "Pres" Eckert Jr. was a american electrical engineer and computer pioneer. With help from john mauchly he designed the first general-purpose electronic digital computer (ENIAC). Designed the first commercial computer in the U.S (the UNIVAC). Born april 9 1919 death June 3, 1995 (aged 76) John Mauchly was a american physicist who with the of john presper eckert made the ENIAC and later the EDVAC. Born on August 30, 1907 death January 8, 1980 (aged 72)