he takes us into the actual fabric of the IC. As if things weren’t confusing enough with simple logic gates like NAND and NOR, it turns out that the designers of the Z80 used a few “crazy ...

Building logic gates out of silicon is old hat, as is building them from discrete transistors, 555 chips, LEGO, and even gears. [Yukio-Pegio Gunji] and [Yuta Nishiyama] from Kobe University ...