超级简单的VB版计算器，没有什么特别是，只是自己练习一下，界面模仿的WINDOWS系统的计算器，实现基本的加减乘除运算.有需要的朋友,可以后期再开发.-Super simple VB Edition calculator, nothing particular, just about their own practice, the interface mimic the WINDOWS system calculator, to achieve the basic addition and subtraction, multiplication and division operations. There is a need of a friend, you can later re-development.