The real-time calendar and clock display system design based on the 51 single-chip microcontroller can display year, month, day, hour, minute, second, and week information, with adjustable date and time functions. The design involved a comprehensive preparation of theoretical basics and peripheral expansion knowledge of the single-chip microcontroller. The design process of the real-time calendar and clock display system was carried out in synchronous hardware and software aspects. The hardware part mainly consists of the AT89S52 single-chip microcontroller, LED display circuit, and time adjustment button circuit. The system displays data through LED, providing user-friendly operation and intuitive display effects. The software part includes clock programs, keyboard programs, display programs, etc. The software design was done using the assembly language of single-chip microcontrollers. To facilitate expansion and modification, the software design adopted a modular structure, making the logical relationships of the program design clearer for easier implementation of time and date adjustment display functions. After all programs were written, debugging was done in Wave software to ensure there were no issues before embedding the microcontroller in Proteus software for simulation. Keywords: AT89S52; DS1302; LED In conclusion, this real-time calendar and clock display system design based on the 51 series single-chip microcontroller offers a user-friendly interface with the ability to display and adjust date and time information. The comprehensive preparation of theoretical foundations and peripheral expansion knowledge, along with the synchronous hardware and software design process, ensure a reliable and efficient system for accurate time and date display. The modular design structure of the software enables easier modification and expansion, making it a versatile and adaptable solution for various applications in time and date display technology.
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