Royal 29307U Calculator "keyboard prints instead" Questions

...keyboard. If you enter "123", the displayed ammount will be "1.23". If you enter "1", the display will read ".01". This is a useful setting when adding a list of numbers in a dollars/cents format, ...

...instead, the test halts and the calculator displays a     message. This results from an incorrect key being pressed, and does not mean that the calculator requires ...