CMOS stands for Complementary Metal-Oxide-Semiconductor. It is a technology used for creating integrated circuits that are widely used in digital circuits. In CMOS technology, both n-type and p-type metal-oxide-semiconductor field-effect transistors (MOSFETs) are used together in a complementary way to form a digital logic gate. The combination of both types of MOSFETs provides better power efficiency and noise immunity compared to other technologies. CMOS technology is used in a wide range of digital circuits, including microprocessors, memory chips, and other digital logic circuits. It is also used in various applications, such as sensors, image processing, and wireless communications.