This circuit is from the 80's, using an integrated of the time. The circuit serves as a reference, as this type of dialing is no longer used today.
Available at Mouser Electronics this component of Diodes Incorporated consists of a voltage...
This circuit can be used in a digital measuring or shield interface. The circuit is from old...
Here we show how two 4017s can be cascaded to count above 10. The circuits are driven by a square...