Today Google honored Alan Turing for his 100th Birthday with doodle. Alan tang was born in 23 June 1912. He was mathmatician, computer scientist , logician and Cryptanalyst. Tuning is highly consider as Father of Artificial Intilligence.
During the World war II He mapped out techniques to break German codes, including the bombe, an electromechanical machine that could find settings for the Enigma machine.
Turing was among the very first people who accepted their homosexuality and avowed publicly about it. His homosexuality also resulted in his criminal prosecution in 1952. He died weeks before his 42nd birthday from cyanide poisoning. Further inquiry into his death revealed that it was a suicide. However, his mother believed his death was accidental.
On September 10, 2009 British Prime Minister Gordon Brown made an official public apology on behalf of the British government for the way in which Turing was treated after the war.
As for his math achievements, he devised a conceptual computing machine called the Turing Machine that would use an infinitely long piece of tape containing a series of symbols. A machine head could read the symbols and add its own, as well as move to different parts of the tape, one symbol at a time.
There's a video of the doodle in action.