Alan Turing — English Mathematician born on June 23, 1912, died on June 07, 1954
Alan Mathison Turing, OBE, FRS was a British pioneering computer scientist, mathematician, logician, cryptanalyst and theoretical biologist. He was highly influential in the development of computer science, providing a formalisation of the concepts of algorithm and computation with the Turing machine, which can be considered a model of a general purpose computer. Turing is widely considered to be the father of theoretical computer science and artificial intelligence... (wikipedia)