"The Ultimate Computer" is a season two episode of the original science fiction television series, Star Trek, first broadcast on March 8, 1968, and repeated June 28, 1968. It is episode No. 53, production No. 53, written by D.C. Fontana, based on a story by Laurence N. Wolf, and directed by John Meredyth Lucas.In this episode, a skeleton Enterprise crew are assigned to test a revolutionary computer system that is given total control of the ship.