I took several classes along these lines in college; one writing a rudimentary OS on bare metal 68k asm, wiring up peripherals on breadboards, etc. Creating an ALU using only 74 series logic chips and the like. This was 30y ago, but the 1970s chips were already antiques, but the lessons were timeless. I'm happy courses like this still exist and I wish everyone had an opportunity to take them as part of standard computer science curriculum. For me at least, they fundamentally shaped my perspective of computing machinery that I never would have experienced otherwise.

Today I program 6502/7 asm for my Atari to help me unwind and it grounds me and gives me joy, while in my day job I'm easily 10 levels of abstractions higher.