Alan Turing: The EnigmaA gripping story of mathematics, science, computing, war history, cryptography, and homosexual persecution and liberation. Hodges tells how Turing's revolutionary idea of 1936-- the concept of a universal machine-- laid the foundation for the modern computer. Turing brought the idea to practical realization in 1945 with his electronic design. This work was directly related to Turing's leading role in breaking the German Enigma ciphers during World War II, a scientific triumph that was critical to Allied victory in the Atlantic. Despite his wartime service, Turing was eventually arrested, stripped of his security clearance, and forced to undergo a humiliating treatment program-- all for trying to live honestly in a society that defined homosexuality as a crime. This New York Times bestselling biography of the founder of computer science and artificial intelligence is the definitive account of an extraordinary mind and life. --Excerpted from 2014 version, published by Princeton University Press. |
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Page 169
... plugboard . It was this that distinguished the military from the commercial Enigma , and made it something that had unnerved the British analysts . It had the effect of performing automatically an extra swapping of letters , both before ...
... plugboard . It was this that distinguished the military from the commercial Enigma , and made it something that had unnerved the British analysts . It had the effect of performing automatically an extra swapping of letters , both before ...
Page 174
... plugboard . The analysts could easily locate all the observed females in the traffic of the day . They would not ... plugboard . Since in 1938 the plugboard was being used with only six or seven pairs connected up , this was not too ...
... plugboard . The analysts could easily locate all the observed females in the traffic of the day . They would not ... plugboard . Since in 1938 the plugboard was being used with only six or seven pairs connected up , this was not too ...
Page 180
... plugboard . This time there is no point in trying out LAKNQKR on the basic Enigmas , and looking at what emerges , for some unknown plugboard swapping must be applied to LAKNQKR before it enters the Enigma rotors . Yet the quest is not ...
... plugboard . This time there is no point in trying out LAKNQKR on the basic Enigmas , and looking at what emerges , for some unknown plugboard swapping must be applied to LAKNQKR before it enters the Enigma rotors . Yet the quest is not ...
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Common terms and phrases
Alan Turing Alan Turing's Alan wrote Alan's American AMT's arithmetic Bletchley Bletchley Park Bombe boys brain British calculation called Cambridge cathode ray tube chess Christopher cipher Computable Numbers cryptanalytic Darwin delay line Delilah differential analyser digits discussion Don Bayley Donald Michie EDVAC electronic enciphered engineering ENIAC Enigma machine explained fact G.H. Hardy German Hanslope Hilbert homosexual human idea intelligence interest kind King's knew letter logical Manchester mathematician mathematics Max Newman mechanical messages method mind Morcom naval Enigma Neumann never Newman operations organisation paper perhaps Peter Hilton physical play plugboard position possible Princeton principle problem question Robin Gandy rotor scientific secret sexual Shaun Wylie Sherborne signals symbols talk tape teleprinter theorem theory thing thought took Turing machine U-boat universal machine Womersley word writing