This interesting circuit of an Electronic Design stores the highest voltage of two applied to its inputs. The circuit is from 1964 and can be adapted to use modern components.
The circuit in the figure uses two of the 4001's four gates to trigger a relay in a timed manner. The...
This 1968 EC&G circuit generates high voltage pulses for firing a gas LASER of the time. The...
This conventional circuit uses the 4017 to control incandescent lamps or LEDs, according to...