The CMOS (Complementary Metal-Oxide-Semiconductor) circuit is a type of consumer circuit that utilizes both p-type and n-type metal oxide semiconductor transistors to reduce power consumption. This design allows for low power dissipation, making it suitable for battery-powered devices and other applications where energy efficiency is crucial. The CMOS circuit's ability to switch between different voltage states with minimal current flow makes it an ideal choice for consumer electronics, including clocks, timers, and data storage devices.