The numerical system mode lets you change your numerical base instead of say the default base 10. To switch to a binary calculations click the :guilabel:`Bin` radio button. To switch the Octal or base 8 format click the :guilabel:`Oct` radio button. To switch to a hexadecimal format or base 16 format click the :guilabel:`Hexadecimal` radio button. For numbers greater than 10 for hexidecimal press the A-F buttons. When you are in number that are not part of a numerical base the button will get grayed out. To switch back to decimal or base 10 press the :guilabel:`Dec` radio button.
Statistic Mode
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To enter Statistic mode :menuselection:`Settings --> Statistic Mode`. To enter multiple entries of data press the :guilabel:`Dat` button to enter data. To show how many pieces of data you have entered press the :guilabel:`N`. To view the mean or average of all the data press the :guilabel:`Mea` button. To view the median of the data press the :guilabel:`Med` button. To clear the statiscal memory press the :guilabel:`CSt` button.
Customizing
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To open configruation for kcalc press :kbd:`Control+Shift+ +` or :menuselection:`Settings --> Configure Kcalc`. To change the maximum number of digits change the :guilabel:`Maximum number of digits` field. To have kcalc set decimal precision to only a certain number of places after the decimal place check the :guilabel:`Set decimal precision` checkbox and select the number of digits after the decimal place. If you ant to show the result in the window title check the :guilabel:`Show result in window title` checkbox.
