Published in a February 1978 Radio Electronics magazine article, this digital circuit uses some of the integrated circuits of the time. The circuit uses a LED bargraph.
The LM100 integrated circuit is quite old, still of a metallic enclosure type. The circuit shown in...
Found in an Electronic Design from the 90s, this circuit makes use of components from the time. The...
This circuit is from an Italian magazine of 1983, but it can be assembled with the most modern...