"AT89C51单片机LED电子时钟设计论文：汇编编程实现功能实现与硬件结合"

Led electronic clock is designed by using AT89C51 chip as the core of the control unit. The display method employs dynamic scanning, controlled by the AT89C51 microcontroller, and combined with a 7407 drive circuit as the driving part of the display circuit, using LEDs as display devices. This design achieves the functionality of displaying the date, timing, time display, alarm, and more through 6 LEDs. Countdown, time adjustment, date setting, alarm setting, and other functions are realized through 6 buttons. Each function is displayed on the LED display, and when the set timing or alarm time is reached, the buzzer automatically rings. Pressing the timing or alarm button will stop the buzzer sound. The software part of the program is written in assembly language, divided into alarm, delay, time adjustment, display, and other sections. The integration of software and hardware is utilized to achieve the overall functionality and design purpose. Key words: electronic clock, microcontroller, dynamic scanning, assembly language.