关于USB底层编程的一套文章，共九篇文章，这是其中的第一篇，其它部分慢慢上传。
USB programming on the bottom of a set of articles, a total of nine articles, this is one of the first chapter, other parts of slowly upload. (2009-02-12, DOS, 97KB, 下载4次)
USB鼠标实现方案，C编程（USB-MOUSE目录）；PROTEL原理图（USB1目录）
USB mouse to achieve the program, C programming (USB-MOUSE directory); PROTEL diagram (Disable directory) (2006-12-06, DOS, 439KB, 下载508次)