Real Time Clock (RTC)

---

An independent timekeeping circuit used within a microcomputer to keep track of the time and calendar date. A clock/calendar circuit is battery powered, so it continues running even when the computer is turned off. The time and date kept by the clock/calendar can be used by the operating system (for example, to "stamp" files with the date and time of creation or revision) and by application programs (for example, to insert the date or time in a document) via calls to the BIOS.
Additional Terms of Use

Close This Window