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 circuit was found in a General Electric documentation from 1965. The circuit is full wave for...
This is another quick adder that we found in an Electronic Design from the 80s. It also applies to...
This circuit uses two sensors that are placed at the intersection of a miniature railroad, causing the LED...