通过本实验学习PC机串口与AVR单片机串口之间相互通讯的基本硬件接口电路和软件编程方法，并且达到使用PC机来控制LED的简单应用。-experiential learning through the PC serial port and AVR serial communications between the basic hardware interface circuit and software programming, and to reach the PC use to control

AVR单片机与PC机之间基于RS485通讯的样例-avr 485

AVR单片机练习程序，提供AVR单片机练习程序包括AD、串口通讯等等(AVR SCM exercise procedures, providing AVR microcontroller exercise procedures, including AD, serial communication, and so on)