These parts sat around for a while until a really neat plasma dot matrix display was found in the ... prototyped a driver circuit with an Arduino. When the function of each pin was discovered ...

is the dot-matrix LED display. It's a reverse-engineered clone of a 1980s Plessey GPD340, made by the same person who created the EMES. With just two characters, via a twin 5 x 7 monochromatic ...

Commercial dot-matrix printing was yet another arena in which the needs of Chinese character I/O were not accounted for. This is witnessed most clearly in the then-dominant configuration of ...