Pressing any digit, the decimal point, or the exponent button
causes the calculator to go into a special mode for entering numbers.
The display format is not used; rather, the buttons pressed to enter
the number are displayed. The rightmost character in the display
gets erased when the button is pressed.
When entering negative numbers, first enter the digits for the
number, then press the button. If you press the
button first, it will change the sign of the
number currently being displayed, not the number you're about to enter.
When entering numbers in exponential format, first enter the
mantissa, then press , and then enter the
exponent. If the number is negative, press
before pressing
. If the exponent is
negative, press
after pressing
.
If the button is pressed while you're not
entering a number, it will have the same effect as pressing
or
. If the
button is pressed after a prefix key, the prefix is cancelled.
Pressing any key to perform an operation will terminate the "entering a number" mode and the display will be formatted using the display settings.