What is the role of the CMOS?

CMOS and Battery Backup. The CMOS is a physical part of the motherboard: it is a memory chip that houses setting configurations and is powered by the onboard battery. The CMOS is reset and loses all custom settings in case the battery runs out of energy, Additionally, the system clock resets when the CMOS loses power.

Similarly, you may ask, what is a CMOS on a computer?

CMOS is Complementary metal-oxide semiconductor, or CMOS, typically refers to a battery-powered memory chip in your computer that stores startup information. Your computer'sbasic input/output system (BIOS) uses this information when starting your computer.

What does CMOS stand for on a computer?

complementary metal oxide semiconductor

What is a CMOS battery in a computer?

1. Alternatively referred to as a Real-Time Clock (RTC), Non-Volatile RAM (NVRAM) or CMOS RAM, CMOS is short for Complementary Metal-Oxide Semiconductor. CMOS is an on-board, battery powered semiconductor chip inside computers that stores information.

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