说明：  51单片机C语言编程实例，从基本的点亮发光二极管、蜂鸣器，到串口通信、LCD、最后详细介绍了51单片机在智能电动小车上的应用。
(51 Microcontroller C programming examples, from basic light-emitting diode, buzzer, to the serial communications, LCD, lastly, a detailed description of the 51 SCM in the smart mini-car applications.)