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During World War II, Alan Turing designed the 'Bombe,' an electromechanical machine used to crack which German cipher?

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Correct answer: Enigma

Alan Turing led the team at Bletchley Park that developed the Bombe, a device that drastically sped up the decryption of German Enigma messages. His work saved millions of lives and shortened the war by years. Despite his heroism, Turing was prosecuted for his homosexuality in 1952 and received a royal pardon only posthumously in 2013. Photo: Charlesdrakew at English Wikipedia (Original text: Charles Drake), Wikimedia Commons, Public domain.

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Source: Wikipedia (CC BY-SA)

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