How Alan Turing ushered in modern computing (photos)

A forerunner of today's computers, the Colossus, which became operational in January 1944, was the first practical electronic digital information processing machine in the world. Code breakers at England's famed Bletchley Park used the computer to help decipher intercepted German signal code messages during the second world war. You can see a video of the Colossus in action by clicking here.