Idea: A pixel that turns off/on depending on whether or not it's powered, kind of like an output block you could put anywhere, this would allow 2d screens which would be cool.
You mean, like 7 segment indicator or garland? But how it would be displayed, if you create a new chip, which contains chip/chips with indicators? It's a good idea, but i can't imagine, how it should work...
So, it would be nice, if developer will add this function and will make 3rd part of "Exploring how computer works". He can tell about multiplexors, encoders, digital comparators and majority element.
