Comment by johnecheck
Comment by johnecheck 15 hours ago
Interesting, I hadn't known that silicon is itself a semiconductor before all the circuits are added. Am I correct in saying that the etching process transforms a single semiconductor into billions?
No, silicon is still just one semiconductor, just like water is just one liquid. The substrate is still just one piece of silicon, despite having many silicon semiconductor devices fabricated in it. Polysilicon layers may or may not be additional pieces of silicon.