4 ms·
It goes back further than that - DOS got the idea of 8.3 filenames from CP/M and before that DEC used three letter file extensions on its minicomputer operating
by tomatocracy 7y ago
It goes back further than that - DOS got the idea of 8.3 filenames from CP/M and before that DEC used three letter file extensions on its minicomputer operating systems. The idea arguably goes back even further into the mainframes of the 1960s although it gets a bit messier then to trace it.