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The Z3 was a German electromechanical computer designed by Konrad Zuse in 1938, and completed in 1941. It was the world's first working programmable , fully automatic digital computer . [ 3 ] The Z3 was built with 2,600 relays , implementing a 22- bit word length that operated at a clock frequency of about 5–10 Hz . [ 1 ]
In 1941, he improved on the basic Z2 machine, and built the Z3. On 12 May 1941 Zuse presented the Z3, built in his workshop, to the public. [23]: 425 [28] The Z3 was a binary 22-bit floating-point calculator featuring programmability with loops but without conditional jumps, with memory and a calculation unit based on telephone relays. The ...
Z3 (computer), the world's first working programmable, fully automatic digital computer created by Konrad Zuse Z3 Theorem Prover , a satisfiability modulo theories solver by Microsoft .Z3, a file extension for story files for the Infocom Z-machine
The Z4 was arguably the world's first commercial digital computer, and is the oldest surviving programmable computer. [1]: 1028 It was designed, and manufactured by early computer scientist Konrad Zuse's company Zuse Apparatebau, for an order placed by Henschel & Son, in 1942; though only partially assembled in Berlin, then completed in Göttingen in the Third Reich in April 1945, [2] but not ...
z3 The Z2 was an electromechanical (mechanical and relay-based) digital computer that was completed by Konrad Zuse in 1940. [ 1 ] [ 2 ] [ 3 ] It was an improvement on the Z1 Zuse built in his parents' home, which used the same mechanical memory .
The Z1 was a motor-driven mechanical computer designed by German inventor Konrad Zuse from 1936 to 1937, which he built in his parents' home from 1936 to 1938. [1] [2] It was a binary, electrically driven, mechanical calculator, with limited programmability, reading instructions from punched celluloid film.
The Revere Camera Company was founded in the early 1920s in Chicago, Illinois, as the Excel Auto Radiator Company by Ukrainian immigrant Samuel Briskin. [1] Built for Excel – and designed by Alfred S. Alschuler, [2] the manufacturing facility was located at 320 E. 21st St., Chicago, Illinois.
[40] [41] The Packard attracted users from across the country: "the Carnegie Foundation, Yale, Pittsburgh, Chicago, Ohio State, Harvard, California and Princeton." [42] 1933: Compagnie des Machines Bull is the new name of the reorganized H.W. Egli - Bull. 1933: The Tabulating Machine Company name disappears as subsidiary companies are merged ...