This CMOS circuit for LED displays is from a Radio Electronics magazine from February 1989. The circuit has an enable pulse for storing the value shown on the display.
We found this circuit in a 1982 documentation, but the circuit can still be easily assembled, as the...
This circuit uses the SQ3524, a switching integrated circuit. The circuit was found in the April...
This circuit is intended for the use as modulated light signals from digital sources. The circuit...