Alan Turing proposes the Automatic Computing Engine, or ACE
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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