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.
