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EDSAC was designed specifically to form part of the Mathematical Laboratory's support service for calculation. [22] The first scientific paper to be published using a computer for calculations was by Ronald Fisher. [citation needed] Wilkes and Wheeler had used EDSAC to solve a differential equation relating to gene frequencies for him. [23]
EDSAC 2 was an early vacuum tube computer (operational in 1958), the successor to the Electronic Delay Storage Automatic Calculator (EDSAC). It was the first computer to have a microprogrammed control unit and a bit-slice hardware architecture. [1] EDSAC 2 modular construction. First calculations were performed on the incomplete machine in 1957 ...
EDSAC, on which the book was based, was the first computer in the world to provide a practical computing service for researchers. [2] Demand for the book was so limited initially that it took six years to sell out the first edition. [7] As computers became more common in the 1950s, the book became the standard textbook on programming for a time ...
Sir Maurice Vincent Wilkes (26 June 1913 – 29 November 2010 [11]) was an English computer scientist who designed and helped build the Electronic Delay Storage Automatic Calculator (EDSAC), one of the earliest stored program computers, and who invented microprogramming, a method for using stored-program logic to operate the control unit of a central processing unit's circuits.
LEO I 'Lyons Electronic Office' [1] was the commercial development of EDSAC computing platform, supported by British firm J. Lyons and Co. 1953 DYSEAC - an early machine capable of distributing computing; 1955 General Motors Operating System made for IBM 701 [2] MIT's Tape Director operating system made for UNIVAC 1103 [3] [4] 1956
EDSAC, the second full-scale stored-program digital computer, began operation with 256 35-bit words of memory, stored in 16 delay lines holding 560 bits each (words in the delay line were composed from 36 pulses, one pulse was used as a space between consecutive numbers). [4]
EDSAC 2: 1958 1: First computer to have a microprogrammed control unit and a bit-slice hardware architecture. IBM 709: 1958 An improved version of the IBM 704 UNIVAC II: 1958 An improved, fully compatible version of the UNIVAC I UNIVAC 1105: 1958 3: A follow-up to the UNIVAC 1103 scientific computer AN/FSQ-7: 1958
The Wikipedia EDSAC article explains that EDSAC was not complete in May 1949: it had no index registers which were added later (in 1953), and also had only half the intended memory when first commissioned. EDSAC was neither more nor less "fully operational" in May 1949 than the intermediate Manchester Mark 1 of April 1949.