Hex digit and seven segments

by ourcircuits

7 parts

Both display parts on one sheet — the kind of display demo that usually sits in someone's premium tier, free here. Four binary-weighted clocks (8, 4, 2, 1 Hz) form a 4-bit bus: the hex display reads it through its built-in decoder and steps 0 through F every 62.5 ms, wrapping once a second — press run and watch it count. Beside it a raw seven-segment-with-dp display is driven pin by pin: a logic constant holds six segments lit, the middle segment follows the 1 Hz bit so the glyph flashes 0↔8, and the decimal point blinks with the 2 Hz bit.