可以自定义com口，自定义波特率，txt内容按行发送，是测试和调试的好程序，对gps，工业控制，信息采集调试有很好的帮助，傻瓜式操作-, you can customize the com custom baud rate, TXT content according to the line to send, is a good program, testing and debugging of GPS, industrial control, information collection an