This circuit can flash for up to 30 months using alkaline batteries as shown in the table next to the diagram. The circuit is from a Radio Electronics from January 1992.
Here is an interesting game found in a 1992 technical documentation. In this game, a set of 9 red...
This circuit was found in a 1969 EEE. The circuit uses transistors from the era that can be...
A frequency divider for digital signals can be constructed based on a single 4018 integrated...