Stills from the video above
The heart of the system was the IBM AN/FSQ-7 computer, which at 275 tons is still the world’s largest computer. Each computer had 55,000 vacuum tubes, required a half acre of floor space, and operated on punch cards. There were 52 AN/FSQ-7 computers around the country.
For more films from the Internet Archive, visit http://www.archive.org/.
Via Laughing Squid.