Alan Turing was one of, if not the greatest computer scientists in the history of the world.
He is one of my biggest inspirations and he was an incredibly clever, brave and generally remarkable man.
If you don't know much about Turing this post may be rather less interesting, but the man was an absolute genius who cracked the Enigma code during the Second World War and shortened the war by two to four years and also developed the things we call 'computers'.
Turing Machines are very simple mathematical devices that take in an input and decide what to do with it. Couple loads of these and you have a system like computers of today. That's how transistors work in the CPU of the computer and so on.
Turing committed suicide after being chemically castrated for being gay back in 1954 - an unbelievable loss to the world.
Anyway, in the next few days I'm sure the world will celebrate this man for what he did.