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The Z3, an early computer built by German engineer Konrad Zuse working in complete isolation from developments elsewhere, uses 2,300 relays, performs floating point binary arithmetic, and has a 22-bit word length.

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The title of “first commercially available general-purpose computer” probably goes to Britain’s Ferranti Mark I for its sale of its first Mark I computer to Manchester University.

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One of the earliest personal computers, the Kenbak-1 is advertised for $750 in Scientific American magazine.

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Based on Charles Babbage's second design for a mechanical calculating engine, a team at the Science Museum in London sets out to prove that the design would have worked as planned.

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Building a computer into the watch form factor has been attempted many times but the release of the Apple Watch leads to a new level of excitement.