2006-10-03 05:06:55 · 10 answers · asked by PHILL G 1 in Computers & Internet ➔ Hardware ➔ Desktops
This battery is used to run the internal clock and to power the cmos memory where bios settings are kept.
2006-10-03 05:09:52 · answer #1 · answered by Interested Dude 7 · 1⤊ 1⤋
The small battery is a CMOS battery that runs your computer system clock. The CMOS does things like maintain your PCs clock, and provides an interface to the rest of the PC hardware for the BIOS to do its job. It requires very little power to operate.
CMOS - complementary metal oxide semiconductor.
When the system is powered off, some persistent BIOS settings are stored in a small bit of battery located on the motherboard with sustained RAM built using CMOS technology.
CMOS is a widely used type of semiconductor. CMOS semiconductors use both NMOS (negative polarity) and PMOS (positive polarity) circuits. Since only one of the circuit types is on at any given time, CMOS chips require less power than chips using just one type of transistor. This makes them particularly attractive for use in battery-powered devices, such as portable computers. Personal computers also contain a small amount of battery-powered CMOS memory to hold the date, time, and system setup parameters.
The name "CMOS settings" have become synonymous with "BIOS settings". Some viruses have been known to corrupt these settings, resulting in a condition where the machine can no longer boot. Simply setting a jumper to disconnect the battery backup will restore the settings back to factory defaults.
2006-10-03 05:10:53 · answer #2 · answered by midnightlydy 6 · 0⤊ 1⤋
The small battery on the motherboard is for the CMOS. That runs a small bit of memory to keep track of the date, time, and system setup parameters on your computer. Your date and time will not be correct if the battery is no good. If it needs replacing, get the battery from Radio Shack, it is a special battery made for computer use.
2006-10-03 05:15:18 · answer #3 · answered by mittalman53 5 · 0⤊ 1⤋
Short for complementary metal oxide semiconductor. Pronounced see-moss, CMOS is a widely used type of semiconductor. CMOS semiconductors use both NMOS (negative polarity) and PMOS (positive polarity) circuits. Since only one of the circuit types is on at any given time, CMOS chips require less power than chips using just one type of transistor. This makes them particularly attractive for use in battery-powered devices, such as portable computers. Personal computers also contain a small amount of battery-powered CMOS memory to hold the date, time, and system setup parameters.
2006-10-03 05:24:56 · answer #4 · answered by Sielent Worrier 3 · 0⤊ 0⤋
The small battery is the cmos battery and it is responsible for keeping alive the real-time clock of you system as well as preserving the bios settings (all or some of them, but that depends ofn the bios used).
2006-10-03 05:12:42 · answer #5 · answered by bogdan 2 · 0⤊ 1⤋
It is for the internal clock and the settings of BIOS that is being saved so that it would not reset the settings even you restarted or turn off the PC.
2006-10-03 05:10:07 · answer #6 · answered by JarmenKell 4 · 1⤊ 1⤋
The one on your motherboard is the battery that keeps your computer's clock working, so when you turn your computer back on, your clock is still on track.
2006-10-03 05:09:15 · answer #7 · answered by Anonymous · 0⤊ 1⤋
It keeps your computer's clock running so that it has the "right" time. (Computers are notorious for having the wrong time)
2006-10-03 05:14:53 · answer #8 · answered by openheaven 3 · 0⤊ 1⤋
it's there so government can spy on you even if your PC is off
2006-10-03 05:11:22 · answer #9 · answered by Anonymous · 0⤊ 1⤋
it is for the password & bios settings
2006-10-03 05:12:33 · answer #10 · answered by Anonymous · 0⤊ 1⤋