yejing

代码说明：

  通过avr单片机与pc机通信，在串口调试助手上发送字符串，然后返回到串口调试助手上且显示在单片机板的1602液晶上(Avr with pc through the single-chip communication, at serial debugging aides on sending the string, and then back to the serial debug assistant on board and displayed in the single-chip LCD on the 1602)