Recently discovered this movie. I still can't believe it was done in 1970! The visual props of the huge mainframes, tape drives, blinking lights, etc were real-

Recently discovered this movie. I still can't believe it was done in 1970! The visual props of the huge mainframes, tape drives, blinking lights, etc were real-computing gear from Control Data Corporation (CDC). Probably one of the greatest sci-fi movies of all time.