单片机在交通信号倒计时器的应用

Application of Single-chip Computer in Traffic Lights Countdown Timer

详细介绍了基于AT89C2051单片机的交通信号倒计时器的基本工作原理，并对其在硬件设计、软件设计和实现方法中的注意事项进行了详细的阐述。

This paper introduces the basic working theory of the traffic lights countdown timer based on AT89C2051 Single-chip Computer. Meanwhile, there is detailed illustration of precautions for its hardware, software and realization.