When you restart a PC, does it completely “shut down”? If it does, what tells it to power up again? If it doesn’t, why does it behave like it has been shut down?
In: Technology
There is a component in the computer called ROM (Read only Memory) which is always on (even when the computer is shutdown and the power is disconnected) – it is possible because of a special battery attached to it. This ROM recieves a signal when you switch on the computer and this communicates the first ever instruction required for the computer to start doing everything else.
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