本设计采用AVR单片机为主控制器实现了对交通灯系统的控制。系统不仅能够提供常规的交通灯定时切换，而且能够在液晶上显示时钟，具备现场调时，调日期及在特定时段实现特殊功能。该系统工作稳定、LCD显示清晰直观、计时准确，比较理想的实现了设计指标的要求。除此以外，该系统还能够进行简单的单片机实验，包括程序下载、流水灯等。-This design uses the AVR microcontroller-based controller for the control of traffic signal systems. The system can provide not only conventional traffic light timing switch, and can be displayed on the LCD clock, with live tune, adjust date and special features during certain time periods. The system is stable, clear and intuitive LCD display, accurate timing, the ideal design specification requirements. In addition, the system can also carry out a simple single-chip experiments, including the program download, light water.