The answer doesn’t actually lay out how electricity flowing through a bunch of NAND gates physically causes the computer/CPU to begin booting up. There’s alway

The answer doesn’t actually lay out how electricity flowing through a bunch of NAND gates physically causes the computer/CPU to begin booting up. There’s always a step missing in these types of answers, step n: electricity begins to flow through gates step n+1: ??? step n+2: Microcode execution begins Presumably in step n+1 something happens to the chip, more than just heating it up, that causes a regular pattern which we would call the very first step of microcode booting up.