The K Desktop Environment

Chapter 2. Usage

General usage is straight forward and similar to the way most simple scientific calculators operate, but take note of the following special KCalc features:

Result Stack

Each time you left mouse button click on the = button or press your keyboard's Enter or = keys, the display result is written to KCalc's result stack. You can navigate through the result stack with your keyboard's Up and Down arrow keys.

Percent Function

The percent function works somewhat differently to that on most calculators. However, once understood, its enhanced functionality proves quite useful. See the section about the percent function for further details.

Cut and Paste

  • Pressing the left mouse button on KCalc's display will place the displayed number on to the clipboard.

  • Pressing the right or middle mouse button on KCalc's display will paste the clipboard content into the display if the content of the clipboard is a valid floating point number.

Statistical and Trigonometric Modes

KCalc can run in Statistical or Trigonometric mode. Pressing F3 will toggle between the modes or you can set the mode with the Configuration dialog brought up by pressing the Configure button or with F2.

2.1. Statistical Mode

In this mode the left column of buttons is allocated to statistical functions:

ButtonsFunction
NRecall the number of data items entered
Inv NDisplay the sum of all data items entered
MeaDisplay the mean of the data items entered
Inv MeaDisplay the sum of the square of all data items entered
StdDisplay the standard deviation (n)
Inv StdDisplay the population standard deviation (n-1)
MedDisplay the median
DatEnter a data item
Inv DatClear last data item entered
CstClear the store of all data item entered