If you haven't already, I highly suggest checking out the rest of Ben Eater's videos. He's an absolutely excellent teacher, and his series on building an 8-bit

If you haven't already, I highly suggest checking out the rest of Ben Eater's videos. He's an absolutely excellent teacher, and his series on building an 8-bit computer from basic logic gates is a super interesting watch that has me on the verge of buying a ton of breadboards and attempting it myself.