Alan Turing proposes the Automatic Computing Engine, or ACE
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19th February 1946 On February 19, 1946, mathematician Alan Turing submits his "Proposal for the Development in the Mathematics Division of an Automatic Computing Engine" to a meeting of the National Physical Laboratory in England. Known as the ACE, Turing's proposal was the first detailed design of a stored-program computer -- one that could store both data and instructions in its memory. A second meeting, held a month later, approved the proposal, with Turing estimating the cost of the project at £11,200. The complete ACE, as designed by Turing, was never built. However a smaller version intended as a trial model, the Pilot ACE, was built and became operational in 1950. Related information: Image:
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