Does anyone remember the name of the movie that came
out in the
mid 60s that had a CDC 3600 (I think) as a background in part of it.
I think you need more clues.
A cool thing that made CDC's distinct is that they tended
to keep the faces of their CRT's round and huge,
even if you weren't doing Air Traffic Control.
Fail Safe was 1964. That's where I'd look.
John A.