If I completely shut down a computer and not use it for months, how can it still tell the time accurately? (given that it isn’t immediately connected to the internet)

Question

If I completely shut down a computer and not use it for months, how can it still tell the time accurately? (given that it isn’t immediately connected to the internet)

In: Technology

Answer 1

There is usually a small “coin” battery on the main board, which powers the computer just enough to keep the date and time. If it were to run out, or you were to take it out, then it would not keep the time.