### Alan Turing

**Born:** June 23, 1912

**Died:** June 7, 1954

**Nationality:** English

**Occupation:** Mathematician

**Biography:** Alan Mathison Turing was an English mathematician, logician, cryptanalyst, and computer scientist. He was highly influential in the development of computer science, giving a formalisation of the concepts of algorithm and computation with the Turing machine, which can be considered a model of a general purpose computer.