This circuit is from Radio Electronics from March 1985. The circuit uses common components at the time and LEDs as indicators. The power supply is 9V.
The Micro-Lock line of Molex connectors can be obtained from Mouser Electronics. These connectors...
The signal from this circuit found in a 1968 Electronics World is sinusoidal and depends on the...
Advertised as the world's simplest circuit for a Z80, this one is from Radio Electronics magazine,...