Which of the following logic families use bipolar transistors? A. TTL B. GaAS C. NMOS D. CMOS E. None of the above

NMOS (n-channel metal-oxide-semiconductor) is a type of logic family that uses n-channel MOSFETs (metal-oxide-semiconductor field-effect transistors). It is one of the two main types of complementary metal-oxide-semiconductor (CMOS) logic families, the other being PMOS (p-channel MOSFET).

CMOS (complementary metal-oxide-semiconductor) is a type of logic family that uses both n-channel and p-channel MOSFETs. It is the most common type of logic family used in computers today.

None of the above is not a logic family.