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How does the computer keeps track of time even after it is turned off?
Wiki User
∙ 13y ago
memory is not accessed when the computer is turned off. If the computer is in sleep mode, it retains power until resumed. If computer is in hibernate mode, contents of memory are written to disk first before power off, and reloaded on power on.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoThe motherboard of your computer has a replaceable built-in CMOS battery which keeps track of the time. So even if the entire unit is switched off (that's unplugged from a AC power source) the battery keeps on "running".
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monitor ram
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no, nothing remains in ram after your computer is turned off (unless it's static ram but hardly anyone has that anymore) in sleep mode your OS does remain in ram but your computer isn't off in hibernate mode, your computer is off and your OS state is written to the hard drive, so that it can be loaded back into RAM more quickly
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What components on a computer can retain a lethal electrical charge even after the device is turned off?
monitor ram
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