Alpha-Numerics for Raster Displays
B. J. GIDDINGS · Ergonomics · 1972
The possibility of using small TV type raster displays in airborne applications raises many problems. One of these is the size of alpha-numeric characters. A legibility experiment is described which suggests that under particular conditions there is an optimum height for characters. This optimum height was found to be different for six-letter words and single digits.