常用的串口通信，串口号可达255，可自动识别可用串口号，采用API实现，免安装-Commonly used serial communication, serial numbers up to 255, can automatically identify the serial number available, the use of API, and free installation

利用自己编写的串口自动识别动态链接库实现串口号的自动识别-Using their serial dynamic link library automatic identification serial number automatic identification

DOS界面串口调试，自动识别串口号 有源程序 可顺利编译实现-DOS interface serial debugging, automatic identification serial number