Simple calculator launch 1 button NumLock. The main idea of our project is \\Comfort is the first\\. It is a basic calculator for everyday usage. The main idea of our project is \\Comfort is the first\\. This calculator is not a scientific or an engineering one. It is a basic calculator for everyday usage. But as it often happens, merits and demerits change their places. When did you use all that scientific or engineering functions? They are just useless in everyday counts. But you do remember, how long it takes to launch any installed calculator.What we really offer you is: