The CMOS is a physical part of the motherboard: it is a memory chip that houses setting configurations and is powered by the on board battery.
yes it is stored in CMOS
The complementary metal–oxide–semiconductor (CMOS) power comes from the CMOS battery located on the motherboard. This battery powers the Basic Input Output System (BIOS) and stores the start-up config for the computer.
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FACILITATE THE ENTRY AND EXIT OF DATA IN MEDIA
All microchips today are manufactured using CMOS(Complementary Metal-Oxide Semiconductor) technology. CMOS chips require less electricity and produce less heat than chips manufactured using earlier technologies such as TTL(Trasistor-Trasistor Logic).