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.
This simple receiver for listening on a crystal phone tunes the range of medium waves. The circuit...
The figure shows a circuit that shows how to control an optodiac to trigger a triac from the...
This configuration was found in a 1976 documentation. Note the use of pin 4 input for reset. The...