Most of us press calculator buttons without thinking much about them. The screen lights up, numbers appear, and mistakes ...

Calculators were designed to simplify the process of solving mathematical problems, regardless of their complexity. However, it turns out that even the most basic buttons on these widely-used gadgets ...

Calculators were designed to simplify mathematical calculations, no matter the complexity, but it turns out that some of the most basic buttons can be baffling for users to understand their functions.

I have two semesters of math classes to complete: Trigonometry and Calculus I. I have at TI-89 graphing calculator that I absolutely hate. Who the hell makes the interfaces for these things? 46 ...