John Whitney (1917–1995) was an American animator and composer who made abstract films with analog and digital computers, including Catalog (1961) and Arabesque (1975).
At one point, John Whitney started using software and working with computers. He had a collaboration with Jack Citron at IBM here in Los Angeles and started making computer films.
Casey Reas, Casey Reas on the History of Generative Art - Part 1
People at that time also got acclimated to computer graphics through the history of Hollywood film. For example, John Whitney developed the effect that was used in 2001: A Space Odyssey for the time tunnel sequence.
Casey Reas, Casey Reas on the History of Generative Art - Part 2