U盘过滤驱动,仿DDK例子diskperf改写,实现U盘的只读操作,供初学者参考-U disk filter driver, imitation DDK examples diskperf rewritten, realize U disc read-only operation, the reference for beginners

实现一个 PS/2 与 USB 键盘过滤驱动,兼容所有 NT 系列的操作系统。-Implementation of a PS/2 and USB keyboard filter driver, compatible with all NT series of operating systems.