I have been teaching Digital Systems 1 for a number of semesters during my career as a lecturer. Digital Systems 1 is all about number systems, basic logic gates and combinations of these gates which can create modules like adders, subtracters, multiplexers, flip-flops, decoders, etc.
The one thing taking up the most time when grading student designs, is testing the logic circuits they build on their breadboards. But now... It's a lot quicker.