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Early Computers


Alan Turing
© Royal Society of London
In 1936, the English mathematician Alan Turing (1912-1954) designed at the age of 24, an imaginery machine that could do any calculations.

This machine, called the Turing machine, was using a set of instructions and works in some way like a modern computer.

More about the Turing machine here!

The first computers appeared in the 1930s with the second world war: they were quite primitive and used triode valves.

A code-breaking machine, named "COLOSSUS", based on Turin's ideas, was built in 1939 by the British. COLOSSUS was designed to decode secret messages rather than do calculations.

After the war, Turing designed the plans for a universal computer that what was called the Automatic Computing Engine, or ACE, which was eventually built in the National Physical Laboratory in England.


Because of his original ideas, Alan Turing is considered as one of the fathers of computer science.

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