Alan Turing is widely considered to be the father of theoretical computer science and artificial intelligence. He visited the National Cash Register (NCR) company in Dayton in December 1942. He was able to show that it was not necessary to build 336 Bombes, so the initial order was scaled down to 96 machines to decipher German Enigma-machine-encrypted secret messages during World War II.copied content from Bombe#US Navy Bombe; see that page's history for attribution
