Because of its classified and strategic nature, the U.S. government kept the existence of ENIAC a closely guarded secret ...

ENIAC, with its 17,468 vacuum tubes ... But BRL heard about the work of John Mauchly at the Moore School. In 1942, he had suggested using vacuum tubes to speed computer calculations.

John Atanasoff and Clifford Berry, 1939 Colossus, Maxwell Newman and Thomas Flowers, 1943 ENIAC, John Mauchly and John Eckert ...

ENIAC filled an entire room. With its bank of blinking lights and 6,000 manual switches, it looked like something we'd associate with a 1950s science fiction movie. Probably because it's what ...