Way back we had mechanical output devices for our computers. These were big, slow, noisy and really a spill-over from the days of the telegraph, but they fulfilled their purpose and much code, including early Unix was written using them. Teletype Corporation are possibly the most well known ones of the time, although there were many other manufacturers, but when you see a picture of a mechanical printer it’s almost always a “Teletype” (And even when not, it’s almost become a generic w...