Technically, the Z3 being developed by the Germans was first ...
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LoginAmericans think they invent everything first, Ensign Checkov can correct that for you ;-)
Germans first, then the Brits, then the Americans.
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Login) by Konrad Zuse
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Login by Tommy Flowers (not Alan Turing ... who built the much more primitive Bombe)
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Login by John Mauchley and J Presper Eckert
All early computer work was funded secretly for the security and military services ... and still are. Who is spending big bucks on quantum computing? Guess who.