John Vincent Atanasoff conceived basic design principles for the first electronic-digital computer in the winter of 1937 and, assisted by his graduate student, Clifford E. Berry, constructed a prototype here in October 1939. It used binary numbers, direct logic for calculation, and a regenerative memory. It embodied concepts that would be central to the future development of computers.
Computers and Information Processing
Society: IEEEMain Category: Consumer ElectronicsSub Category: Computers and Information ProcessingEra: 1930-1939DateCreated: 1939AmesState: IACountry: USAWebsite: http://www.ieeeghn.org/wiki/index.php/Milestones:Atanasoff-Berry_Computer,_1939Creator: Atanasoff, Vincent John, Berry, Clifford E.
YearAdded:Image Credit: Courtesy Flickr/Joe Wolf (CC BY-ND 2.0)Era_date_from: 1939
Society: IEEEMain Category: ElectricalSub Category: Computers and Information ProcessingEra: 1940-1949DateCreated: 1939-1945BletchleyMilton KeynesState: BuckinghamshireZip: MK3 6GYCountry: UKWebsite: http://www.ieeeghn.org/wiki/index.php/Milestones:Code-breaking_at_Bletchley_Park_during_World_War_II,_1939-1945Creator: Sinclair, Hugh , Turing, Alan
Image Credit: Courtesy Flickr/Draco2008 (CC BY 2.0)Era_date_from: 1939
On this site during the 1939-45 World War, 12,000 men and women broke the German Lorenz and Enigma ciphers, as well as Japanese and Italian codes and ciphers. They used innovative mathematical analysis and were assisted by two computing machines developed here by teams led by Alan Turing: the electro-mechanical Bombe developed with Gordon Welchman, and the electronic Colossus designed by Tommy Flowers. These achievements greatly shortened the war, thereby saving countless lives.