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.
Several versions of this circuit can be found on this website. This makes use of FETs that can...
The circuit shown was found in the February 1994 issue of Electronics Now magazine. The circuit...
Found in American documentation from the 1980s, this circuit makes use of components of the time,...