While calculators were invented to make it easier to solve math problems, no matter how easy or complicated they might be, some people are finding out that even the most common buttons on the ...

They further clarified: "When the calculator has C/AC buttons, the 'C' stands for 'clear entry' and 'AC' signifies 'all clear'. The 'C' button will erase the most recent number you've entered ...

But there also was a startling omission: The calculator’s “C” button—the one that clears input—was gone. The “C” itself had been cleared. The “C” button’s function is vestigial.

If you've ever used a calculator, you've most likely noticed that some buttons have letters on them. While the C, CE, and AC buttons are all used to clear the numbers you've added to your ...