一个很好的计算器软件和源码，有很好的注释，能够实现三角函数乘方等功能，很适合C#入门实践的人。-A good calculator software and source code is well commented, power and other trigonometric functions can be achieved, it is suitable for people who practice C# Getting Started.

An example of getting information about windows systems(An example of getting information about Windows systems)