A real-time clock (RTC) is a computer clock (most often in the form of an integrated circuit) that keeps track of the current time. Although the term often refers to the devices in personal computers, servers and embedded systems, RTCs are present in almost any electronic device which needs to keep accurate time. ==Terminology== The term is used t...
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http://en.wikipedia.org/wiki/Real-time_clock
The CMOS circuitry that keeps track of the year, day and time of day for the system. Abbreviated RTC.
Found on
http://www.encyclo.co.uk/local/20581
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