Alan Turing as a young boy. (Photo by Getty Images) 23 June 1912 Born Alan Mathison Turing in Maida Vale, London, the second son of Julius and Sara Turing October 1931 Turing takes up a mathematics scholarship at King’s College Cambridge, earning a first-class degree. In 1935 he is elected to a junior research fellowship January 1937 A paper by Turing is published that is later recognised as laying the foundation of computer science June 1938 At the age of 25, Turing receives his PhD from Princeton for his dissertation Systems of Logic Based on Ordinals 4 September 1939 Turing arrives at Bletchley Park to begin his wartime work on code and cipher systems. He goes on to lead the team in Hut 8 (left)