Super common technique. Aircraft cockpit videos usually exhibit stroboscopic effects because of the scan rate of the camera and the refresh rate of the displays, and those are very expensive devices.
Short shutter time photos are just not a case I think most displays are designed for.
ASCII was started in 1960. A terminal then would have been a mostly-mechanical teletype (keyboard and printer, possibly with paper tape reader/punch), without much by way of "circuit logic". Think of it more as a bit caused a physical shift of a linkage to do something like hit the upper or lower part of a hammer, or a separate set of hammers for the same remaining bits.
Yes, that's true ASR-33 was first application, but IBM has impact on ANSI/ASA comeete and ASCII standardisation. In 1963 IBM System/360 was using BCD with digits quick "parse" and in it's peripherals. I remember it from some interview with old IBM tech employee ;)
In the "Flight Levels", altitudes are referred to not in feet above sea level but as "FLxxx" where xxx is a nominal altitude in 100s of feet.
Altimetry is done using barometric pressure. Since this varies with weather, airplanes at lower altitudes set their altimeters to the local barometric pressure for a reasonably accurate reading. In the flight levels, where planes are typically covering ground quickly and there is very little chance of your path conflicting with the surface of the Earth, every plane sets to an agreed-upon reference of 29.92 inches of mercury as the altimeter setting.
