A technician opens a computer cabinet and notices a round coin-shaped battery on the motherboard. What is its purpose?
Store BIOS/CMOS settings
The question relates to the components found on a computer's motherboard and their purposes. When the technician observes a round coin-shaped battery, it is commonly referred to as a CMOS battery. This component plays a specific role within the computer system.
Let's break down the function of the CMOS battery and evaluate the options provided:
- Understanding the CMOS Battery:
- The round, coin-shaped battery found on a motherboard is used to power the CMOS (Complementary Metal-Oxide-Semiconductor) chip.
- The CMOS chip stores the BIOS (Basic Input/Output System) settings, including system time, date, and hardware configuration settings.
- The CMOS battery ensures that these settings are retained even when the computer is powered off or unplugged.
- Evaluating the Options:
- Store BIOS/CMOS settings: This is the correct purpose of the CMOS battery. It provides power to retain the configuration settings stored in the BIOS chip.
- Power the monitor: This option is incorrect. Monitors have their own power supplies and are not powered by components on the motherboard.
- Control USB ports: USB ports are controlled by the motherboard circuit, not by the CMOS battery. This option is incorrect.
- Increase RAM speed: RAM (Random Access Memory) speed is determined by its specifications and the motherboard's capability, not by the CMOS battery. This option is incorrect.
- Conclusion: The primary purpose of the CMOS battery is to maintain the BIOS/CMOS settings. It is essential for preserving the configuration data such as system time and date.
Therefore, the correct answer is: Store BIOS/CMOS settings.
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