Based on the design of a clock circuit using a single-chip microcontroller, this graduation thesis focuses on the AT89C51 chip as its core component. With additional peripheral circuits, a simple electronic clock powered by a 5V DC power supply was successfully designed. The hardware components include four seven-segment LED displays for accurate time display, with dynamic scanning for efficiency. The clock system also features LED indicators for seconds display, and the programming was done using assembly language to control functions such as time display and reset. Through this project, the author gained a deeper understanding of single-chip basic circuits, timer and interrupt programming methods, and honed skills in learning, designing, and developing both software and hardware. This project not only showcases the versatility and cost-effectiveness of the AT89C51 microcontroller, but also highlights the author's ability to apply theoretical knowledge in practical electronic design.
