Simple Calculator

一个计算器类似于手持计算器，内存和先进的数学！

Simple Calculator is the perfect calculator for your smartphone! It is very light (only a few Kilobytes) and very easy to use just like every handheld calculator!!

- It has support for big numbers (up to 20 digits) and also has memory that is kept intact even if you quit the calculator and go do something else. When you come back, everything will still be there.

- It have the same look and fell in every device size and screen resolution!

- You can also use the DEL key anytime to correct a simple mistake, instead of starting over.

- Use memory to keep a running total you can see.

- You can see all its operations and advanced math functions in the same screen!

- Its advanced math operations are: percentage, square root, power of two, and power of n.

- It also have the ANS button, that returns the last answer you got so you can continue your calculations.