Alan Turing (1912-1954)
Alan Turing was a mathematician who is known as the Founder of Computer Science. Turing is specifically honored on this site as the creator of the Turing Test. His vision of testing human against machine is still considered a viable method for determining the human-like behavior of a computer program. For indepth biographical information on Turing go to--
http://turnbull.dcs.st-and.ac.uk/~history/Mathematicians/Turing.html or