介绍了如何实现系统中PC与PLC之间通讯的方法，并给出实例程序。

The methods and program of communication between PC and PLC are presented in this paper.

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一个用于聚类的工具箱，内有主元分析、模糊等技术的Matlab源代码和应用实例程序Demo。

One for clustering toolbox, with principal component analysis, fuzzy techniques, such as Matlab source code and application procedures for Demo.

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对“禁用栈执行、使用安全C库支持、编译器技术”当前最新的几种防御技术进行了讨论，并给出了部分具体的实例程序源代码。

Some latest defense techniques such as the prevention of using stack, and using safety C to support and compiler techniques are discussed. Some specific program codes are given as examples.

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