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Colossus I

The first really successful electronic computer was built in Bletchley Park, England. It was capable of performing only one function, that of code breaking during World War II. It could not be re-programmed.
 

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Alan Turing

It is often said that all modern computers are Turing machines in hardware: in a single article, Turing ushered in both the modern computer and the mathematical study of the uncomputable.

In 1945, inspired by his knowledge of Colossus, Turing designed an electronic stored-program digital computer, the Automatic Computing Engine (ACE). At Bletchley Park, and subsequently, Turing pioneered Artificial Intelligence

Alan Turing made numerous fundamental contributions to code-breaking, and he is the originator of the modern (‘stored-program’) computer.