A simple question that immediately responds: “No, we do not need it.” If it is possible, however, is quite another matter. Really, it is an interesting challenge changing the interface of the calculator in a way that can attract and impress the user of perhaps one of the most widely used and useful software in an operational environment.
It was a Sunday morning when finally I decided to organize some books that had been scattered in cartons for a long time. I wanted to put them on the bookshelf, when I saw three books that were not mine. I was surprised! Those books brought back memories when I was a boy in high school. I was remembering that I had borrowed those books a long time ago and never returned to their owner.