Looking for an certain "Kodak" 16 m.m. filming I found this:
https://www.youtube.com/watch?v=LE1kE0-yNW8
Those kids look like they are using some teleprinters ("Teletype Corporation"), but there are some math excersing they are doing. Could be that those teletypewriters where connected to an computer - "Teletype" Model 33 could use A.S.C.I.I. interface, so they could be connected to an computer.
But the filming looks like early '60's... an A.S.C.I.I. camed in 1967. Or did they still dressed like that in 1967-1970?