求翻译：6、可提供串口通信协议以及VB通信源程序，赠送VB通过RS232串口操作控制器的演示程序或代为开发专用程序。是什么意思？

6, which provides serial communication protocol and communication source vb, vb presented by rs232 serial operation of the demonstration program, or on behalf of the controller developed proprietary programs.

6, may provide VB Serial communications protocols and procedures, complimentary VB communication sources through RS232 operating controller or on behalf of demo development of specialized procedures.

6th, may provide the serial port communication protocol as well as the VB correspondence source program, bestows VB or replaces the development specific routine through the RS232 serial port operation control demonstration program.

6, can provide the serial communications protocols, and VB communication source program, get the VB RS232 serial port operation controller demo, or on behalf of the development of specialized programs.