Sep 28
The calculator which ships with Windows is very useful for performing basic arithmetic and low-level scientific functions, however if you are looking for a more powerful calculator, check out Microsoft’s Power Calculator.
This calculator replacement offers advanced functionality such as graphing, variable storage and full equation writing. If you ever used a TI-8x calculator, the functions of the Power Calculator are similar (although not nearly as fully featured) with respect to the mathematical operations.
This tool is a free download, so if you think it will be useful to you give it a try.