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 201
... signals ' . These Offizierte signals were doubly enciphered for extra security within the U - boat itself . From the Hut 8 point of view , these were signals which , even after the day's settings had been found and the decryption ...
... signals ' . These Offizierte signals were doubly enciphered for extra security within the U - boat itself . From the Hut 8 point of view , these were signals which , even after the day's settings had been found and the decryption ...
Page 217
... signals were re - encyphered in the Enigma and re - transmitted , and of GC and CS's ability to isolate these signals , the ' Werft ' decrypts made , in return , an invaluable contribution to the daily cryptanalytical assault on the ...
... signals were re - encyphered in the Enigma and re - transmitted , and of GC and CS's ability to isolate these signals , the ' Werft ' decrypts made , in return , an invaluable contribution to the daily cryptanalytical assault on the ...
Page 246
... signal at each of ten frequencies up to 3000 Hz , and also took an eleventh component which coded either the fundamental pitch of the sound or ( during unvoiced sounds like ssss ) an absence of pitch . Each of these eleven signals ...
... signal at each of ten frequencies up to 3000 Hz , and also took an eleventh component which coded either the fundamental pitch of the sound or ( during unvoiced sounds like ssss ) an absence of pitch . Each of these eleven signals ...
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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 Britain 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 instructions 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 Shaun Wylie Sherborne signals symbols talk tape teleprinter theorem theory thing thought took Turing machine U-boat universal machine Womersley word writing