基于usb 芯片net2272的一个loopback的程序，稍加修改，即可移植到你的mcu或者dsp上...

把USB接口做成动态连接库-USB interface, Dynamic Link Library

CH375 USB接口协议芯片MC51平台下的实例程序-CH375 USB interface protocol chip platform MC51 examples of procedures under

USB转换芯片，pl2303无需晶振，电路简单，稳定性高-USB conversion chip, pl2303 without crystal, a simple circuit, high stability

windows usb无线网卡TL-WN322G_WN322G+.rar驱动程序-windows usb wireless card TL-WN322G_WN322G+. rar driver

usb鼠标设计资料,里面有电路图和源程序,有类似的可下载-usb mouse design information, which has circuit diagram and source code can be downloaded has a similar

USB_UART串口详细资料，初学者的好材料-Serial USB_UART details of a good material for beginners

200元买来的D12开发资料,包括上位机驱动和应用程序，电路图，固件。-200 yuan bought D12 development information, including PC drives and applications, schematics, firmware.

这是usb官方网站的在去年出的USB3.0的规范-This is the official website of usb in the last year of the USB3.0 specification

凌阳SPCA5XX解码芯片USB驱动源代码，仅供参考，请不要用于商业用途。-Sunplus SPCA5xx decoder chip USB driver, reference only, not for commercial usage.

作品简介:该作品与配备的多个从机构成一个计分体系,可以通过总机器读取从机器的分值.每个计分员在手上的计分从机器输入分数,则无需人手统计,就能在总机器的液晶屏上看到各位记分员给的分数. 支持多个从机同时通过USB线连接到总机.由于USB连接市场上能方便的购买,所以使用USB连接线构建计分体系. 作品作用:在各种文艺活动中的计分环节上,能方便的为计分员统计分数. -Works Introduction: the work and is equipped with a number from the body into a scoring system, the machine can read the total scores from the machine. Each scoring in the hands of the points from the machine enter the scores, you do not need manpower statistics can be in the overall machine s LCD screen to see all the scores to the scorekeeper. support multiple machines at the same time from the USB line to connect to the switchboard. USB connection as a result of the market can make it easier to buy, so use the USB cable to build a scoring system. work roles: in a variety of cultural activities in the scoring areas, can make it easier for Members of statistical scores points.