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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 ]
Inside U.S.A. is a nonfiction book by John Gunther, first published in 1947 and one of that year's best-selling nonfiction books in the United States. It describes the author's observations during 13 months of travel through the then-48 U.S. states beginning in November 1944.
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
1883: The Yellow Pages are invented. The business listings directory got its iconic look by accident in 1883 when a Cheyenne, Wyoming, printer ran out of white paper and made do with yellow paper ...
Arab astronomer, Jabir ibn Aflah (Geber), may have invented or inspired the Torquetum, an observational instrument and mechanical analog computer device used to transform between spherical coordinate systems. [7] It was designed to take and convert measurements made in three sets of coordinates: horizon, equatorial, and ecliptic. 1206
The hoist rope, powered by large diesel or electric motors, supports the bucket and hoist-coupler assembly from the boom. The drag rope is used to draw the bucket assembly horizontally. By skillful maneuver of the hoist and the drag ropes the bucket is controlled for various operations. The dragline excavator was invented in 1904 by John W ...
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 .