查找系统的Usb设备，并分别检测usb是否连接上了设备-locator system Usb equipment, and to detect whether usb connect equipment

水箱液位控制系统，能够检测出系统的水位高度，温度值，从站的水位高度，温度值-Tank liquid level control system, the system can detect a high water level, temperature values, from the point the water level height, temperature

Netkeeper === === Netkeeper 星空极速2.5的替代拨号软件 技术实现 ========= 1、 拨号方面使用Windows系统的RAS相关API函数实现 2、 加密模式根据已完成的破解算法实现 3、 其它细节 A． 自动连接 程序启动后检测是否已连接，未连接则停顿一会开始连接 B． 记录用户名密码 使用INI文件保存 C． 断线重拨功能 程序定时检测是否在线，如断线则自动连接 D． 多帐户保存

Detect when a USB device is plugged in or unplugged the system. -Detect when a USB device is plugged in or unplugged the system.

In this example we show OFDM system perform over fading channel. The simulation results will be checked with ones we obtain through theoretical analysis. Full channel state information is used to detect data.-In this example we show how OFDM system p