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by ja27 4315 days ago
I believe Microsoft's file extensions and the 8.3 naming scheme are descended from Digital's 6.3 naming in VMS, RT-11, etc. DEC even used a number of the same extensions: EXE, COM, OBJ. Not sure where they came from prior to that. I don't think IBM used file extensions like that in System/360, System/32, or anything prior to PC-DOS. From what I can tell, Burroughs and Univac didn't use them either.