VB通过COM串口读取条形码设备，程序用到了MsComm.ocx控件，如果对此控件没有掌握用法的朋友，可以参考一下这个实例。-COM serial port through VB to read the bar code equipment, procedures used in the MsComm.ocx control, if this control does not have the use of a friend, you can refer to this example.