CMOS

CMOS - Complementary Metal Oxide Semiconductor

CMOS is a semiconductor technology used in most of the IC's. CMOS transistors are based on metal oxide semiconductor field effect transistor (MOSFET) technology.

CMOS circuits use a combination of p-type and n-type metal–oxide–semiconductor field-effect transistor (MOSFETs) to implement logic gates and other digital circuits. 

CMOS inverter (NOT logic gate)