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The RTC 1307 is a real-time clock module designed for precise timekeeping in embedded systems and microcontroller-based projects. It operates using an onboard DS1307 IC, which keeps track of seconds, minutes, hours, days, months, and years with automatic leap year adjustment. The module features a backup battery slot, ensuring that the clock continues to run even when the main power is disconnected. It communicates using the I2C protocol, making it easy to interface with Arduino, Raspberry Pi, and other microcontrollers. The RTC 1307 is widely used in data logging, attendance systems, automation, and event scheduling applications. Its accurate and low-power operation makes it an essential component in time-sensitive projects.