这是一个硬件的开发实例，是USB到串口的轮换实例。-This is an example of the development of hardware, USB to Serial examples of the rotation.

PL2303芯片通用的USB转串口驱动程序，支持win7，保证可正常使用-PL2303 USB to serial chip universal driver to support win7, guarantee the normal use-PL2303 USB to serial chip universal driver to support win7, guarantee the normal use