Commercial accounting calc

Calculator developed for large number of operations, and then review them easily.
* You have 3 memories, each one is a data strip, and added to the original strip has 4 strips of simultaneous data
* You can set the number of decimal and integers
* In addition to the 4 basic operations, you can take the square root, powers and percentages
* You can repeat the last entry, just pressing one of the 4 basic operations.
* If desired, save the information that is processed.
* In addition, you can save operations performed on the external memory (if available), with different names for each saved file.
* Allows you to retrieve and re-edit the saved files.

Designed for use with smartphones, the screen does not rotate