Components

I like this calculator because the design is simple and the application is very easy to use and just have to add some components for this calculator application is more perfect.

Proposal

my advice for the application of this calculator is added features history for a result of the calculations for a result of the calculation not lost if users need again.

Mockups / Examples

• Display calculator for now
  

• Display calculator if my ideas implementation
  

Benefits

The usefulness or more precise benefit of the idea is, all the usual calculator users, in order to see the results already in the calculation. with my idea of ​​this user do not have to fear if forgotten the same results that have been calculated because still living on history. I think this requires all the users of a regular calculator