We found in this American documentation this circuit for activating common cathode displays. In it we have the way to cascade the 4033 to drive two displays (dozens and units).
This contact or reed switch actuation was found in a 1964 Electronic Design. The circuit can be...
This circuit was found in an English magazine from 1973. The magazine no longer exists, but the...
This experimental flip-flip changes its state by the command of two push-buttons. The state is...