USB开发工具，MS提供，可以读取所有USB设备的descriptor表。是USB开发者的好帮手。

turb pascal7.0 写的usb存取程序-turb pascal7.0 write usb access procedures

PDIUSBD12套件说明及源码-PDIUSBD12 Boards descriptions and source

关于usbview的驱动程序设计。-on usbview driver design.

一款视频9分割前端的应用代码，带云台控制功能，带外部24警报处理，带硬盘的USB模式控制（不含记录）。9路模拟视频输入，AD采用TI的5154，视频分割用AM209。后端的视频记录不包含。-DVR

usb 访问HID设备的源码 可以访问HID设备（除鼠标，键盘被系统占用）-usb access sound code of HID device ,can access HID device(except mouse and keyboard are occured with system )

精工热敏打印机DPU-414驱动,供大家参考-Seiko DPU-414 thermal printer driver for your information

USB通讯若干问题探讨-USB communication on a number of issues

ActiveX示例

High volume USB 2.0 devices will be designed using ASIC technology with embedded USB 2.0 support. For full-speed USB devices the operating frequency was low enough to allow data recovery to be handled in a vendors VHDL code, with the ASIC vendor providing only a simple level translator to meet the USB signaling requirements. Today s gate arrays operate comfortably between 30 and 60 MHz. With USB 2.0 signaling running at hundreds of MHz, the existing design methodology must change.