3G技术的一些简介和入门，大家可以看看以便3G技术的使用和学习！...

VB.net版串口控制串口控制activeport安装档和钥匙枪

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一个串行口通讯的例子程序-An example of serial port communication program

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关于卡尔曼滤波和等增益滤波器的仿真源码，给出了他们的性能比较，很实用的程序-Such as Kalman filtering and the gain on the filter simulation source code, given their performance comparison, a very useful program

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