How does tech keep time when shut off?

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How can my phone with no cell service or wifi be shut off and turned back on to tell the correct time and date? Does my phone use battery while “dead” to keep some functions running?

In: Technology

5 Answers

Anonymous 0 Comments

There’s a battery in your motherboard. It keeps track of the time you switch off your machine and keeps ticking even when its off keeping a counter.

Once you switch on the machine, it checks the time your pc was turned off, checks the counter, adds it to the previous time and shows you the current time.

This is why when you forget your bios password and reset it by removing the battery, all time and date settings is lost.

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