How Does a PC Measure Time with Its System Clock?

Learn how PCs measure time using system clocks and quartz crystals, even when powered off. Explore the technology behind accurate timekeeping.

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A PC measures time using its system clock, driven by a quartz crystal. This clock keeps track of the passage of time even when the computer is off, thanks to a small battery on the motherboard. The system clock is periodically updated by internet time servers to ensure accuracy.

FAQs & Answers

  1. What is a system clock in a computer? A system clock is an internal timing device used by a PC to track time and coordinate operations accurately.
  2. How does a quartz crystal help with time measurement? A quartz crystal oscillates at a specific frequency, providing a stable time reference for the system clock in a computer.
  3. Why does a computer need a battery for the clock? The battery keeps the system clock running even when the computer is turned off, ensuring accurate timekeeping upon restart.
  4. How do internet time servers contribute to time accuracy? Internet time servers provide regular updates to the system clock, ensuring that the computer maintains accurate time synchronization.

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To dive deeper into PC hardware, check out our related content on motherboard components and how software keeps your system synchronized.

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