Real-Time Clock (RTC)

A clock that keeps track of the time even when the computer is turned off. Real-time clocks (RTCs) run on a special battery that is not connected to the normal power supply. In contrast, clocks that are not real-time do not function when the computer is off.

Do not confuse a computer’s real-time clock with its CPU clock. The CPU clock regulates the execution of instructions.

Vangie Beal
Vangie Beal
Vangie Beal is a freelance business and technology writer covering Internet technologies and online business since the late '90s.
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