This paper analyzes on the operating principle of WDM, and provides the design example of a USB device drive program.

分析了WDM的工作原理，并给出一个USB设备驱动程序的设计实例。

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This thesis takes Lingyang chip microcomputer and USB chipset PDIUSBD12 as the core of controlling device, and makes a systemic study of USB related techniques and USB interface drive program.

本论文以凌阳单片机和PDIUSBD 12构成USB设备控制端，对usb相关技术和USB设备驱动程序的编写进行研究。

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The program is able to reset permissions on all files stored on the target drive, create an unprotected folder if this is necessary and lock the device with a single click.

该方案是能够重置存储在目标驱动器上的所有文件的权限，创建一个未受保护的文件夹中，如果这是必要的，只需一次点击锁定装置。

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