How Do Computers Keep Track of Time? Understanding System Clocks
Discover how computers maintain accurate time using system clocks powered by quartz crystals or atomic clock chips.
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Computers use the system clock to keep track of time. The clock is maintained by a quartz crystal or an atomic clock chip powered by a small battery on the motherboard. This clock runs even when the computer is off, ensuring accurate time tracking across restarts and power cycles.
FAQs & Answers
- What is a system clock in a computer? A system clock in a computer is a device that keeps track of the current time and is essential for coordinating various operations within the computer.
- How does a quartz crystal maintain accuracy in timekeeping? A quartz crystal maintains accuracy in timekeeping by oscillating at a precise frequency, which allows for consistent time measurement.
- What happens to the system clock when the computer is turned off? The system clock continues to keep time even when the computer is turned off, thanks to a small battery on the motherboard.
- Why do computers use atomic clocks? Computers use atomic clocks for their high precision and stability, ensuring that the timekeeping is extremely accurate over long periods.