He created the first computers and first computer programs. After the war, Turing created the first detailed design of a “stored-program” Computer. While most of his work was top secret, it was found out that Turing was gay!
1n 1952, he admitted to having had sex with another man and was convicted.
The court ordered him to undergo injections of female hormone to “cure or lower his sex drive”. These not only made him impotent and caused him to grow female type breasts, the injections also induced physiological disturbances.
In spite of the horrific damage being done to his body & mind, he continued his work. Turing was a founding father of modern cognitive science. He thought of the human brain as a digital computer. Turing theorized the cortex at birth is an 'unorganized machine' which through 'training' becomes organized 'into a universal machine or something like it'.
He pioneered what is now referred to as Artificial Intelligence.
Just last year a movie about Alan Turing: “The Imitation Game” with Benedict Cumberbatch brought his story to the world.