What is a Real-Time Clock (RTC) and Why are They Important in Computing?

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A real-time clock (RTC) is an electronic device designed in the form of an integrated circuit to measure the passage of real-time.

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Real-time clocks maintain accurate time measurements within an embedded system even when the main power is off.

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The need for accurate timekeeping is often used as a trigger for specific events like turning the device on or sounding off an alarm clock.

Purpose of an RTC

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Real-time clocks are used whenever a device needs to measure or check against the passage of time.

When is a real-time clock used?

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