How do phones (and other devices) show the exact date and time even after being switched on after a while?

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My phone was switched off since the past hour and I switched it on right now and I realised how normal it was for It to show me the exact present time and date and I wonder how.

In: Technology

7 Answers

Anonymous 0 Comments

Even when turned off, there is still a little bit of power being used to keep some fundamental operations of the device running, one of them being the system clock.

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