熟悉keil仿真软件、proteus仿真软件的使用。了解并熟悉单片机I/O口和LED灯的电路结构，学会构建简单的流水灯电路。掌握C51中单片机I/O口的编程方法和使用I/O口进行输入输出的注意事项。-Familiar with the keil simulation software, proteus simulation software use. MCU I/O port and the circuit structure of the LED lights, and become familiar with how to build a simple water lamp circuit. Grasp the C51 MCU I/O port programming and I/O port input and output of Note.