学习c#的好例子，简单使用的计算器程序，供初学者参考。-Learning c# a good example, easy to use calculator program for advanced users.

较高级计算器，实现四则运算，函数图像绘制，及相应的科学函数计算。-Four operations more advanced calculator functions image rendering, and scientific function calculation.

实现计算器加减乘除、进制切换、取余、取模，还有高级计算器的切换功能。-Achieve calculator arithmetic, binary switch, take the remainder, modulus, as well as advanced switching function calculator.