A British mathematician Alan Mathison Turing

A British mathematician, logician, cryptanalyst, philosopher, computer scientist, mathematical biologist, and marathon and ultra distance runner Alan Mathison Turing was born on 23 June 1912. He was highly influential in the development of computer science, providing a formalization of the concepts of "algorithm" and "computation" with the Turing machine, which can be considered a model of a general purpose computer. Turing is widely considered as the "Father of Theoretical Computer Science and Artificial Intelligence.