Atanasoff Berry Computer

• The Atanasoff-Berry Computer was the world's first electronic digital computer. It was built by John Vincent Atanasoff and Clifford Berry at Iowa State University during 1937-42. It incorporated several major innovations in computing including the use of binary arithmetic, regenerative memory, parallel processing, and separation of memory and computing functions.

http://www.cs.iastate.edu/jva/jva-archive.shtml

Part of the InformalHistoryOfProgrammingIdeas.