how does a videogame system clock keep the time when unplugged?

Question

like a ps2 for example you unplug it and put it away for a while, and then one day you are like lets play gta san andreas but you need to check your settings before you play and your clock has the exact time and date but how?

Answer 1

It is connected to an atomic clock most likely, and whenever you have connection to the internet, it re-calibrates. Also, it is possible to create a local cache so that you only have to be connected to the internet once:In python date/time modules still work;Why don't you google that?