这是微软的一个USB块传输例程，虽然它是基于Intel USB开发板的，但是也很值得我们好好的研究。-This is a Microsoft USB block transmission routines, although it is based on the Intel USB development board, but also worthy of our good look.

c8051f34XX单片机的一些源代码例子，希望对大家有所帮助-SCM c8051f34XX some source code examples, I hope all of you to help