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Additional info for Alan Turing: Computing Genius and Wartime Code Breaker (Makers of Modern Science)
Death of a Friend However, this special time in two young lives would not last. During the Christmas and New Year’s break of 1929–30, Turing and Morcom worked on various projects and exchanged letters, reporting results and comparing academic plans. At the end of the break, the new term began smoothly enough, but as Hodges recounts, on February 6, 1930, after they had gone 12 AlAn Turing to a concert together, and Turing had returned to his room, during the night he awoke suddenly. ” On that same night, Morcom suddenly became dangerously ill.
She and Babbage met in 1833 (when she was about 18) and these two individuals with a passion for numbers began collaborating. Like Jacquard’s loom with its punched-card weaving patterns, the Difference Engine relied on programming concepts and had a complex design capable of handling extensive and involved calculations. Lovelace showed a ready understanding of the concept of a programmed machine when she translated and annotated a paper Calculating Minds 27 In the 1650s, the English mathematician William Oughtred (1575–1660) invented the slide rule, using a stick marked with logarithmic measurements that slid up and down to deliver the results.
Although three other inventors had designed similar machines independently—one each in the United States, the Netherlands, and Norway—the Enigma proved to be a superior design, and some commercial sales of the Enigma had already taken place to large businesses. However, Scherbius knew his best potential customer for the Enigma would be the Imperial German Navy, which needed secure radio communications for its fleets. Therefore, he wrote to the German navy about his machine, noting in his letter that he thought his cipher machine had several significant advantages.