The father of modern computer is widely recognized as Alan Turing. Turing was a British mathematician, logician, and computer scientist who made significant contributions to the field of theoretical and applied mathematics, cryptography, and computer science. He is best known for his concept of the "Turing machine," a theoretical device that laid the foundation for modern computing. Turing's work during World War II, including his efforts in breaking the German Enigma code, played a crucial role in the Allied victory. His work and ideas have had a profound impact on the development of computers and artificial intelligence, earning him the title of the father of modern computer science.