The death of calculator market?

[compsystems]

The strategy that calculator manufacturers must follow is to develop a complete and full screen UI for a computer (In different OS) of a numerical and / or algebraic computer system that can also be run on a calculator, I think it is better with a touch screen area larger than keyboard.
In addition, with a good IDE and SDK to teach algorithmic logic and enhance mathematical and algebraic, spatial, graphic reasoning, ...

This would motivate students and teachers to buy a physical device.
There's nothing like having dedicated, integrated electronic hardware for math that no mobile device can replace.