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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 ]
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
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 ...
In 1941, Zuse followed his earlier machine up with the Z3, [72] the world's first working electromechanical programmable, fully automatic digital computer. [75] The Z3 was built with 2000 relays, implementing a 22-bit word length that operated at a clock frequency of about 5–10 Hz. [76] Program code and data were stored on punched film.
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.
It was not programmable, which distinguishes it from more general machines of the same era, such as Konrad Zuse's 1941 Z3 (or earlier iterations) and the Colossus computers of 1943–1945. Nor did it implement the stored-program architecture , first implemented in the Manchester Baby of 1948, required for fully general-purpose practical ...
Computer City was a supercenter concept featuring name-brand and private label computers, software and related products; acquired in 1991, these supplanted the original Radio Shack Computer Center chain, which closed that year. Computer City became the first International Computer Superstore with over 100 locations in six countries.
Michael John Aldrich (22 August 1941 – 19 May 2014) was an English inventor, innovator and entrepreneur. [1] In 1979 he invented online shopping [2] to enable online transaction processing between consumers and businesses, [3] or between one business and another, a technique known later as e-commerce. [4]