This circuit with TTL integrated circuits was found in the December 1987 issue of Radio Electronics magazine. The circuit uses a LED scale and is suitable for gaming applications.
This conventional slow-moving circuit uses incandescent light bulbs, but can be changed to use...
This TTL dice is from an old publication from 1978, but it can still be assembled, as the...
The purpose of this circuit is to control magnetic door locks activated by the power grid. The...