This circuit with TTL integrated circuits was found in the December 1987 issue of Radio Electronics magazine. The circuit uses a LED scale and is suitable for gaming applications.
Found in a 1967 EEE, this circuit oscillates at 20 MHz according to the values of the given...
This circuit is from a 1980s Motorola documentation. The circuit can be made with modern...
This circuit is from Radio Electronics from April 1987. The circuit is powered with voltages that...