This could be a silly question but I recently found my old DS Lite that hasn’t been turned on since 2011. When I turned it on after over 10 years it had the accurate date and time, how does it know that?
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Many electronic devices have tiny watch batteries on their motherboards to power their BIOS or whatever the equivalent is for handheld consoles. Your device is technically “on” all the time, and it keeps track of the date, as well as other critical information/processes.
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