做U盘最重要的是ＵＳＢ处理部分，该程序实现基本的USB协议-U disk so the most important thing is to address some of USB, the process of achieving basic agreement USB

U盘读写协议:我开发U盘的重要参考代码。 bulk_only传输协议，FAT16文件系统.-U disk read and write an agreement: I developed an important reference U disk code. bulk_only Transfer Protocol, FAT16 file system.