Read input data save to file, parse it, make some easy calculations and display results.

The software should run on Raspbian, raspberry pie2. It must be really easy form without any design and hard architecture, I click on button and two process should start, one listens to hardware port and second starts the process which gives put data. I need these two data streams saved to file. I will attach both samples of streams. After parsing I need to do some calculations, really easy math and at definite condition terminate both process, reading from hardware port and kill the second process. After this results should be displayed on the same form. Also the application should save those files for further processing and the application must be able to load up those older files for review.