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这是一个usb cdc host 的工程，只需做简单的修改即可成为自己的工程(stm32f4 usb cdc host)

vb编写的usb12通道的数据采集系统，由于时间匆忙，界面做得一般，还请大家见量(vb prepared usb12 channel data acquisition system, as time rush, the general interface done, Please also see the volume)

可以实现的USB的通信，并且有一个简单的界面个供开发人员参考，值得阅读(Can be achieved USB communications, and a simple interface for developers of reference, it is worth reading)

SOURCE USB DEFENDER FOR SAFETY YOUR USB

说明：  vb编程实例的电子书chm,很多例子看，可以下载来学习学习看看(VB Programming Example)

vb实现禁用USB-U盘设备的程序源代码，可以用于初级USB监控管理。(vb achieve disable USB-U disc device source code, can be used for primary USB monitoring and management.)

management and account sys

说明：  NTRIP协议（IP数据网络传输协议）是用于移动RTK改正数据从基地到利用互联网漫游协议。这是特别有用的领域，传统的收音机不好，由于树木或丘陵。NTRIP客户端软件你需要靠近车件。它从互联网上获取数据，并将其发送给漫游者使用的串行端口。这个程序是一个更有用的替代GNSS互联网电台。它通常用在拖拉机驾驶室的小型笔记本或上网本上。互联网接入通常是通过USB无线数据卡从您的手机公司，或系留蓝牙数据能力的手机。VS2010编译。增加了对$GNGGA的支持。(NTRIP (Network Transport of RTCM data over IP) is a protocol for moving RTK correction data from the base to the rover using the Internet. This is especially useful in areas where traditional radios don't work well due to trees or hills. The NTRIP Client is the piece of software you need near the rover. It gets the data from the Internet and sends it out the serial port for the rover to use. This program is a more useful alternative to GNSS Internet Radio. It is typically used on a small laptop or Netbook in the cab of the tractor. Internet access is usually via a USB wireless data card from your cell phone company, or tethered Bluetooth to a data capable phone. VS2010 compilation. Increased support for $GNGGA.)

说明：  本程序是usbcan卡的一个例程，对于初次调试usbcan卡的人员 是很有用的。(usbcan this procedure is a routine cards, for the first time debugging of usbcan card is very useful.)

说明：  明华URF-35H-MEM IC读卡器测试程序(URF-35H-MEM IC)