John von Neumann

350 BC   Aristotle - How to form valid logical arguments.

   1705   Gottfried Leibniz - Similarity of logic and arithmetic.

   1831   Michael Faraday - Electromagnetic Induction.

   1847   George Boole - Systematized logic.

   1943   Max Newman - Specification for Heath Robinson.

   1943   Tommy Flowers - Colossus - First Electronic Digital Programmable Computer.

1945   John von Neumann               model / architecture