Howard Aiken, American

1
1943, Mark 1
51 feet long and had 750,000 parts.It was the
first electromechanical computer.
Howard Aiken, American
Grace Hopper,American
Programmer
2
1946, ENIAC
Got its power from 18000, vacuum tubes. Could do
5,000 additions per second
J.Presper Eckert John Mauchly