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CMOS ABCs
Troubleshooting
Motherboard definitions
CMOS ABCs
Also known as a RTC/NVRAM
or CMOS RAM, CMOS is short
for Complementary Metal-Oxide
Semiconductor. CMOS is an on-board
semiconductor chip powered by a CMOS battery inside IBM compatible computers that
stores information
such as the system time and system settings for your computer.
A CMOS is
similar to the Apple Macintosh
computer's PRAM.
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Types of CMOS batteries - The following is a listing of
the types of batteries found in computers to power the CMOS memory. The most common type of
battery is the Coin cell battery (Lithium Battery). The coin cell battery is the size
of a dime, as shown below.
Life time of a CMOS battery - The standard lifetime of a
CMOS battery is around 10 Years; however, this amount of time can change depending on the
use and environment that the computer resides.
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CMOS
BIOS
CH000015
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