Thank you for the video and the great explanation about logic gates. I immediately started to build the gates on my Zoia as well. I realised that the XNOR gate can be build a little bit simpler by running signal A and B parallel into a AND and NOR gate and from there into a OR gate again.
Thanks. And well done spotting another way of doing it too. There are several ways to do the complex ones. I didn't consider other options as I thought I'd strictly maintain the pattern of using only the gate plus a NOT for inversion lest I risk confusing someone, especially as I used that idea trying to simplify the explanation of what the gates were by grouping them together two and two.
Thanks. It's not the easiest thing to explain, but I think I managed to do it reasonably well. I also learnt a lot while making this video. By figuring out how to explain them, I now understand binary logic gates so much better than I used to, and I am far more likely to be able to use them myself.