Coders· 8-bit
Pair a transistor that turns on with 1 with one that turns on with 0, and you get logic gates that barely waste power.
The transistor you opened is an nMOS: it conducts when its gate is 1. Swap n-type and p-type silicon and you get its mirror image, the pMOS, which conducts when its gate is 0.
Used together they are called CMOS, complementary MOS, and nearly every chip made today is built this way.