Who built the world's first binary digit computer: Z1...?
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Konrad Zuse
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Ken Thompson
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Alan Turing
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George Boole
A
Correct answer
Explanation
Konrad Zuse built the Z1 computer in 1936-1938 in Germany. It was the first freely programmable binary digital computer, using binary logic and floating-point arithmetic. Ken Thompson co-created UNIX, Alan Turing pioneered computing theory, and George Boole developed boolean algebra.