dll import,Load Library操作使用，GetProcAddress操作使用

VB的延时函数，能实现简单的函数等待，时间到了及执行下一步的命令。本延时函数在到达延时时间后会弹出“MsgBox ”，显示“"Time out!!!”。适合初次接触VB延时函数的使用者进行了解学习，也比较简单易懂。 

这是一个用VC实现的一个小小计算器，很小巧，但很适用哦，里面的一些经验也很值得揣摩啊-with VC of a small calculator, very small, but very applicable Oh, there"s some experience is worth trying to figure out ah

在普通的表达式中，符号是位于运算对象之间的，而在波兰表达式中，运算符号位于参与运算的对象之前。 波兰式在计算中的价值在于它不需要使用括号，之所以如此是由于波兰式的操作符的先后顺序是明确的。 -In the general expression, the symbols are located in between the operands, while the expression in Poland, the computation involved in computing at Symbol before the object. Polish-style in the calculation of the value is that it does not require the use of brackets, the reason for this is due to Poland-based operator of the sequence is clear.

带默认参数的构造函数。又一个有关VC++构造函数重载的源程序，比较适合VC++初学者。以后我上传一系列这种类型的源程序供大家学习之用。-with default parameters of Constructors. One of the Heavy Constructors VC source, more suitable for beginners VC. After I uploaded a series of this type of source for all learning.

本程序主要实现通过rs232串口实现短信收发-Through the serial port to send and receive SMS

System will automatically delete the directory of debug and release, so please do not put files on these two directory.

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几个C#编程的小技巧-several C# programming tips

OCR libary ,光学字符识别

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