The figure shows how to use an 8080 in a digital to analog converter. The circuit is from a Radio Electronics from February 1978. The other components are from that time, except for the TTL.
With this circuit, a relay can be activated from an alternating signal with frequency up to a few...
With this circuit the visually impaired can easily locate important places inside the house, such...
In the figure we have the way to use the transistors of an old-paired pair as a trigger circuit. The...