2ACES AND DEUCES
Simon Lavington
TURING’S FIRST COMPUTER DESIGN
After almost three years of intensive day-to-day code-breaking activity at Bletchley Park, Alan Turing was gradually moved towards longer-term planning. From 7 November 1942 to 23 March 1943 he was part of a British Joint Staff Mission visiting the United States, where, amongst other things, he saw a secure speech cipher system at Bell Labs. This intrigued him, and he believed he could improve on the design. From the autumn of 1943 Turing was spending two days a week working on speech encipherment at Hanslope Park, which was about ten miles north of Bletchley Park and was the home of various secret communications projects. By the autumn of 1944 Turing was working full time at ...
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