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Electronic Delay Storage Automatic Calculator
Electronic Delay Storage Automatic Calculator (EDSAC) was an early British computer. Inspired by John von Neumann's seminal ''First Draft of a Report on the EDVAC'', the machine was constructed by Maurice Wilkes and his team at the University of Cambridge Mathematical Laboratory in England. EDSAC was the second electronic digital stored-program computer to go into regular service.〔The Manchester Small-Scale Experimental Machine, nicknamed "Baby", predated EDSAC as a stored-program computer, but was built as a test bed for the Williams tube and not as a machine for practical use. http://www.cl.cam.ac.uk/conference/EDSAC99/history.html. However, the Manchester Mark 1 of 1949 (not to be confused with the 1948 SSEM prototype) was available for general use by other university departments and Ferranti in April 1949 http://www.computer50.org/mark1/MM1.html despite being still under development.〕
Later the project was supported by J. Lyons & Co. Ltd., a British firm, who were rewarded with the first commercially applied computer, LEO I, based on the EDSAC design. Work on EDSAC started at the end of 1946,〔() 〕 and it ran its first programs on 6 May 1949, when it calculated a table of squares〔 To be precise, EDSAC's first program printed a list of the squares of the integers from 0 to 99 inclusive.〕 and a list of prime numbers. EDSAC 1 was finally shut down on 11 July 1958, having been superseded by EDSAC 2, which remained in use until 1965.
==Technical overview==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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