Alan Turing
who is he and what was he famous for?
Alan Turing was an English mathematician, wartime code-breaker and pioneer of computer science. He was born on 23 June, 1912, he went to cambridge university and studied mathematics and also worked afterwards he worked there.
In 1936, Turing delivered a paper, "On Computable Numbers, with an Application to the Entscheidungsproblem," in which he presented the notion of a universal machine (later called the “Universal Turing Machine," and then the "Turing machine") capable of computing anything that is computable: The central concept of the modern computer was based on Turing’s paper.