usb口通讯 很实用的哦，速度快，稳定性强

EZ-USB FX2的一个单字读和单字写的程序，利用GPIF轻松实现，值得一看-EZ-USB FX2 in a word read and write words of procedure, and use GPIF easily, an eye-catcher

Cy3663的USB主机固件程序-Cy3663 the USB Host Firmware

对VB的USB接口虚拟示波器的设计,高速的传输效率,界面的可操作性强-VB of the USB interface on the virtual oscilloscope design, high-speed transmission efficiency, the interface may be operable

包括了usb传输的集中协议，令usb的硬件开发成为过去.-including a focus on the transmission usb agreement, usb hardware development the past.

USB monitor

一个用vb开发的源代码-vb development with a source code

ezUSB fireware 的固件-ezUSB fireware firmware

USB2.0频谱分析仪是一种高分辨率的动态信号谱分析系统，既可用于中低频低通信号的分析和处理（最高频率不超过20MHZ），也可用于频率很高的带通信号的分析和处理。-USB2.0 spectrum analyzer is a high-resolution dynamic signal spectrum analysis system, which can be used in low frequency communication, analysis and processing (not more than the maximum frequency of 20MHZ), can also be used for high frequency communications with the issue of the analysis and processing.

AT89C51SND1 SPI原程序，相于USB的。-AT89C51SND1 SPI source code, USB based.

usb通信检测软件，很实用，重要-usb detection communications software, very useful, important