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The Code Book: The Science of Secrecy from Ancient Egypt to Quantum Cryptography, by Simon Singh

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In 1823 Babbage designed “Difference Engine No. 1,” a magnificent calculator consisting of 25,000 precision parts, to be built with government funding.
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The Code Book: The Science of Secrecy from Ancient Egypt to Quantum Cryptography
The Code Book: The Science of Secrecy from Ancient Egypt to Quantum Cryptography
by Simon Singh
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