TTL binary adder (CB22430E)

This circuit is based entirely on TTL gates. The circuit must be powered by a voltage of 5 V.

Extended timer (CB8718E)
This circuit was found in a 90s Popular Electronics. It is based on a Motorola double timer common at...
Divide-by-2 Counter - 4018 (CB164E)
One flip-flop of the 4018 can be used as a frequency divider or counter as shown here. Frequency...
Astable with Operational II (CB14061E)
This traditional circuit is from a 1972 RCA technical publication. The circuit can be developed with...