When we used NPN transistors to build our logic gates, it implies they can be used for building bigger things. In this video I’ve built a full 1 bit adder from our second Introduction video, entirely from discrete transistors.
Build 8 of these–and you have an 8-bit adder.
The show notes include the complete circuit diagram.
So here’s the video.
And thanks for watching.
The Hacking Den 