The associated book ('The Elements of Computing Systems') was eye-opening for me. Not sure if 'today's computers' is quite right -- if I understand correctly, a

The associated book ('The Elements of Computing Systems') was eye-opening for me. Not sure if 'today's computers' is quite right -- if I understand correctly, a lot of the simplicity has been optimised out of the hardware stack, to the point that even experts don't have a fully detailed understanding. Still really worthwhile to read and understand the basic principles, though.