We found this circuit in a 1986 documentation. It uses only LEDs, batteries, resistors and the power supply which can consist of 4 batteries or a 9V battery. The basic circuit uses two-color LEDs.
This circuit generates a single pulse with duration given by the capacitor. The circuit can be...
We found this circuit in an American 1980s documentation, but it can be implemented with modern...
This interesting 80's logic circuit consists of a gate that can be programmed according to the...