Andrew Hodges, Douglas Hofstadter's Alan Turing: The Enigma The Centenary Edition PDF

By Andrew Hodges, Douglas Hofstadter

ISBN-10: 069115564X

ISBN-13: 9780691155647

It is just a mild exaggeration to assert that the British mathematician Alan Turing (1912-1954) kept the Allies from the Nazis, invented the pc and synthetic intelligence, and expected homosexual liberation via decades--all ahead of his suicide at age 41. This vintage biography of the founding father of computing device technological know-how, reissued at the centenary of his beginning with a considerable new preface via the writer, is the definitive account of a rare brain and lifestyles. A gripping tale of arithmetic, pcs, cryptography, and gay persecution, Andrew Hodges's acclaimed booklet captures either the internal and outer drama of Turing's lifestyles. Hodges tells how Turing's innovative thought of 1936--the suggestion of a common machine--laid the basis for the fashionable machine and the way Turing introduced the belief to sensible attention in 1945 along with his digital layout. The ebook additionally tells how this paintings was once without delay regarding Turing's best function in breaking the German Enigma ciphers in the course of global struggle II, a systematic triumph that used to be severe to Allied victory within the Atlantic. while, this is often the tragic tale of a guy who, regardless of his wartime carrier, used to be finally arrested, stripped of his safeguard clearance, and compelled to suffer a humiliating therapy program--all for attempting to dwell truthfully in a society that outlined homosexuality as against the law.

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His estates in Tipperary passed down to his great-great-grandson Thomas George Stoney (1808–1886), who had five sons, the eldest inheriting the lands and the rest dispersing to various parts of the expanding empire. The third son was a hydraulic engineer, who designed sluices for the Thames, the Manchester Ship Canal and the Nile; the fifth emigrated to New Zealand, and the fourth, Edward Waller Stoney (1844-1931), Alan’s maternal grandfather, went to India as an engineer. There he amassed a considerable fortune, becoming chief engineer of the Madras and Southern Mahratta Railway, responsible for the construction of the Tangabudra bridge, and the invention of Stoney’s Patent Silent Punkah-Wheel.

There remained a flickering dream of culture and freedom in Ethel Stoney’s heart and for six months she was sent, at her own request, to study music and art at the Sorbonne. The brief experiment was vitiated by the discovery that French snobbery and Grundyism could equal that of the British Isles. So when in 1900 she returned with her elder sister Evie to her parents’ grand bungalow in Coonoor, it was to an India which represented an end to petty privation, but left her knowing that there was a world of knowledge from which she had been forever excluded.

He was born on 23 June 1912 in a nursing home in Paddington,* and was baptised Alan Mathison Turing on 7 July. His father extended his leave until March 1913, the family spending the winter in Italy. He then returned to take up a new posting, but Mrs Turing stayed on with the two boys, Alan a babe in arms and John now four, until September 1913. Then she too departed. Mr Turing had decided that his sons were to stay in England, so as not to risk their delicate health in the heat of Madras. So Alan never saw the kind Indian servants, nor the bright colours of the East.

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Alan Turing: The Enigma The Centenary Edition by Andrew Hodges, Douglas Hofstadter

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