This game with digital logic circuits was found in the December 1976 issue of Radio Electronics magazine. The circuit includes the power supply driving a set of LEDs.
This circuit uses a piezoelectric transducer to produce sounds like a buzzer. Frequency is...
This sophisticated sinusoidal audio signal generator uses a Wien bridge configuration with an...
This 7400 TTL circuit has a memory, keeping the LED on when a pulse is detected. The circuit must be...