Real-Time Clock

A Real-Time Clock (RTC) is a specialized integrated circuit that keeps track of current time and date even when the main system power is off. It typically uses a small backup battery or capacitor to maintain timekeeping functionality and often includes a crystal oscillator for accurate time measurement. RTCs are commonly found in computers, microcontroller projects, and embedded systems where precise timekeeping is essential for scheduling tasks, logging data with timestamps, or maintaining system clocks during power cycles.