History of computer

In 1930 the first analog computer was built by American named Vannevar Bush.
Mark I, the name given to first digital computers, was completed in 1944.
The man response for this invention was Professor Howard Aiken.
Vannevar Bush and Howard Aiken

In 1946 two engineers at the University of Pennsylvania, J.Eckert and J.Maushly, built their digital computer with vacuum tubes.
J.Eckert and J.Maushly

Another important achievement in developing computers came in 1947, when John von Neumann developed the idea of keeping instructions for the computer inside the computer's memory.
John von Neumann

Neumann's stored program computers were made possible by the invention of the vacuum tube that could control and amplify electronic signals.
Von Neumann architecture