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EDVAC(Electronic Discrete Variable Automatic Computer) The successor to ENIAC, EDVAC was designed by J. Presper Eckert and John Mauchly at the University of Pennsylvania in the 1940s. Although it was the first stored program computer, it did not become operational until 1952, two years after SEAC, which was based on EDVAC designs.
EDVAC was an arithmetic-only computer working with binary numbers rather than the decimal operations of ENIAC. It had 1K 44-bit words of delay line memory. See ENIAC, SEAC, early memories and early computers.
The first stored program computer, built in 1952. Derived from electron discrete variable automatic compiler.
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delay line memory
Electronic Numerical Integrator and Computer
John von Neumann
A First Draft of a Report on the EDVAC (Electronic Discrete Variable Automatic Computer)," written by von Neumann in June 1945, described a design based on the stored-program concept, meaning that operating instructions could be entered into a computer via punched cards and then stored internally.
Mauchly and Eckert wrote the 12-page document to explain how the UNIVAC had evolved from the earlier ENIAC and EDVAC (illustrated above).
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