Real Time Clock

RTC is the PC real time clock, i.e. the clock in charge of the system date and time. Nowadays this circuit is embedded in the motherboard chipset, in a circuit called south bridge. A battery located on the motherboard is in charge of keeping this clock working even when the computer is turned off. This battery is also in charge of feeding the configuration memory (a.k.a. CMOS).

Total or partial reproduction of the contents of this site, as well as that of the texts available for downloading, be this in the electronic media, in print, or any other form of distribution, is expressly forbidden. Those who do not comply with these copyright laws will be indicted and punished according to the International Copyrights Law.

We do not take responsibility for material damage of any kind caused by the use of information contained in Hardware Secrets.