[GreenKeys] computers and teletypes

[Keith Lueck]

Short documentary on how IBM automated message distribution over teletypes.  M15, M19 and closeup of what looks like an M28, in addition to vintage computer gear...  Also, I think a Frieden of some description - I know they used them as operating consoles for some machines of that era.  
Rare IBM Film: "The Big Switch" 1963, and 1410 Data Processing System, Computer Network Automation


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Rare IBM Film: "The Big Switch" 1963, and 1410 Data Processing System, ...


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