usbtocom_comnum

代码说明：

  现在很多人都在用USB转串口,但是由于它是动态分配的,找起来比较麻烦,所以可以用这个程序自动侦测USB转串口对应的串口号(Many people now are using USB to serial port, but because it is dynamically allocated, is too much trouble to find them, so you can use this program automatically detects the USB to serial serial number corresponding to)