The processor is at the heart of all computing. It takes any data that can be made digital and changes it via maths and logic, as many times as we like. As Alan Turing pointed out in the 1930s, this is something that can do automatically anything we can describe in mathematics -- and in the digital world, all problems are mathematical.

After Turing's theoretical insight, it's just been a matter of the appropriate engineering to make the process affordable, efficient and practical enough to see real-world uses. The history of IT is thus driven, at heart, by that engineering -- and the future of IT will be written by how we can continue to ...

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