![Screenshot_2019-04-11-23-12-12-picsay.jpg](https://cdn.steemitimages.com/DQmdyAKWKEbFh8XMHgukBHEVPfpFoeTohGiPLGyj8P7aRPS/Screenshot_2019-04-11-23-12-12-picsay.jpg)

# Introduction
A Simple Calculator is a programmed Open Source Calculator in Java made by Pablo Fraile Alonso for the Batxillerat Research project. This calculator allows unique features such as: Number of pi implementations in dark mode.

**Repository**
https://github.com/Pablito2020/Treball-de-Recerca

# Components
The components (Features) I want to suggest is:

- Discount
- Check
- History

Simple Calculator has a very good function, you can calculate using this application. In terms of function, indeed this application has a very good function. I really appreciate the developer of this project. I have been using this application for several months, and it was a very pleasant experience. But I think, this application will be more complete and interesting if the developer adds some new features in it. Therefore, I want to suggest some features for the Simple Calculator application. I hope my suggestions can be an additional idea for developers, and I hope developers can implement the features that I recommend.

# Proposal description
**Discount**
We recommend that developers add a Discount feature at the top of the app's display, then the developer must add additional tax features, original prices, discount percent, price discounts, and final prices in it. The developer must also give users the choice to fill in additional taxes, original prices and discount percent. Then provide information on the amount of discounted prices and final prices.

**Check**
The developer must add a Check feature at the top of the Calculator display. The developer must modify it to provide information to the user about the results of the calculated amount (+). When the user presses the Check feature, each number that is summed (+) before must be displayed, until it reaches the final result. So there will be no errors when counting in large numbers.

**History**
We recommend that developers add this feature at the top of the application's display. In the History feature, the developer must add all the history of the results of calculations that have been done before, and give the user the choice to delete them.

# Mockups / Examples
Below I will show examples of locations or illustrations if the features I recommend are implemented by the Developer.

![Screenshot_2019-04-11-23-12-12-picsay.jpg](https://cdn.steemitimages.com/DQmWaP7ePXAP8Ci6uf39t2DWJeCWDGagLe9EUWn5cEBp6iH/Screenshot_2019-04-11-23-12-12-picsay.jpg)

![Screenshot_2019-04-11-23-12-12-picsay.jpg](https://cdn.steemitimages.com/DQmTs5kWQ82KTVyDJQXBo74iSAGZYSHXdK33gjouNM2bcLU/Screenshot_2019-04-11-23-12-12-picsay.jpg)

![Screenshot_2019-04-11-23-12-12-picsay.jpg](https://cdn.steemitimages.com/DQmQrRPTcdWvCUQh1fZRhhVAUUamZaFnun6HUdCvg34Q7LC/Screenshot_2019-04-11-23-12-12-picsay.jpg)

![Screenshot_2019-04-11-23-12-12-picsay.jpg](https://cdn.steemitimages.com/DQmabVcrnsqPYZxmVEZpUf9byjcgJFwfA5dchq6DYg6Z4rN/Screenshot_2019-04-11-23-12-12-picsay.jpg)

![Screenshot_2019-04-11-23-12-12-picsay.jpg](https://cdn.steemitimages.com/DQmdiUEw2ucMaig1HS9zbwWQJ97CdRV7YjUrXWFrhdNt8qh/Screenshot_2019-04-11-23-12-12-picsay.jpg)

![Screenshot_2019-04-11-23-12-12-picsay.jpg](https://cdn.steemitimages.com/DQmQCWPTRYtmjeaccSS5TPhZYTX19RYPvLe7Zf6XSTNH3LG/Screenshot_2019-04-11-23-12-12-picsay.jpg)

![Screenshot_2019-04-11-23-12-12-picsay.jpg](https://cdn.steemitimages.com/DQmYcni31r1qt7Scm3Y2XHUpVFLxrdd5E1SGDBGZ7HRKs1J/Screenshot_2019-04-11-23-12-12-picsay.jpg)

![Screenshot_2019-04-11-23-12-12-picsay.jpg](https://cdn.steemitimages.com/DQmXmN7nNohMp7uhgr1N5N7tDvEb81fYdi4LNUj61GZ8fvF/Screenshot_2019-04-11-23-12-12-picsay.jpg)

# Benefit
**Discount**
Discount is the most popular word for anyone. Sometimes discount forms are complicated enough to be difficult to calculate. However, with the presence of this feature in the Simple Calculator application, it will be easier for users to calculate discounts when shopping etc.

**Check**
The Check feature is a very important and useful feature to use. Because with this feature, users can check every calculation that is done. Each calculated sum will be displayed step by step until it reaches the final result. Like when calculating the price of goods in very large quantities. After getting the final calculation result, the user can check one by one the price of the item, so that no errors occur.

**History**
After the developer adds the History feature, the user can display the history of the calculations that have been done previously easily and quickly. Users can also delete all previous history lists. So that users no longer have difficulty to see the results of calculations that have been done before. And that is a big advantage for users.

# Conclusion
To implement the features above, developers may need to make major improvements. And in my opinion, it doesn't matter because it will have a good effect later. Because with the presence of some features that I recommend, this application will be more interesting to use, and users of this application will increase.

The features that I recommend are certainly very useful for users and developers because they will enhance the user experience in the future. I hope, the Simple Calculator application developer will soon be able to implement this suggestion.

Thank you :)

# GitHub Account
https://github.com/ammarraisafti

**Submit in GitHub**
https://github.com/Pablito2020/Treball-de-Recerca/issues/1