Dot Matrix Font

Text into a field of lit dots, the way the hardware has it: the classic 5x8 character-cell bitmap font as column masks, a flat run of columns per line, a window onto that run so scrolling is an offset rather than a transform, and every lit dot of a line as one SVG path (square or round). Plus the duty cycle a display's glow rides on and a marquee clock derived from elapsed time, so a dropped frame cannot make the scroll drift.