The film Man & Computer, made in 1965 by IBM's UK branch, provides a basic understanding of computer operations. A large portion of the film shows the ways in which a computer can be simulated by five people using the standard office equipment of the day. The film employs a number of different techniques, including animations, and features a few brief scenes of an IBM System/360 in use—just months after the first machines were delivered. Starting in the 1940s, IBM became a major producer of films used for sales, training, documenting business processes, entertaining at company functions, and educating the public. Several IBM films were made by respected filmmakers and sometimes featured well-known actors.