KCalc
KCalc is a calculator which offers many mathematical functions, such as trigonometric functions, logic operations, and statistical calculations
In addition to the usual functionality offered by most scientific calculators, KCalc offers a number of features:
(Information from: https://utils.kde.org/projects/kcalc/)
- KCalc provides trigonometric functions, logic operations, and it is able to do statistical calculations.
- KCalc allows you to cut and paste numbers from/into its display.
- KCalc features a results-stack which lets you conveniently recall previous results.
- You can configure KCalc's display colors and font.
- You can configure KCalc's precision and the number of digits after the period.
- The use of key-bindings make it easy to use without a pointing device.
(Information from: https://utils.kde.org/projects/kcalc/)
How to Install KCalc:
1. Open the Terminal (Shortcut: Ctrl + Alt + T)
2. Type the following command: sudo apt-get update
3. Press Enter or Return and type in your password
4. Type the following command: sudo apt install kcalc
5. Type Y and press Enter or Return
1. Open the Terminal (Shortcut: Ctrl + Alt + T)
2. Type the following command: sudo apt-get update
3. Press Enter or Return and type in your password
4. Type the following command: sudo apt install kcalc
5. Type Y and press Enter or Return
How to Remove KCalc:
1. Open the Terminal (Shortcut: Ctrl + Alt + T)
2. Type the following command: sudo apt-get remove kcalc
3. Press Enter or Return and type in your password
1. Open the Terminal (Shortcut: Ctrl + Alt + T)
2. Type the following command: sudo apt-get remove kcalc
3. Press Enter or Return and type in your password
You can also install it via the KDE Applications website. It provides you with three methods for installing the application: AppStream application store,Flathub, or Snap Store. The versions from these installations should be newer than the version from the Ubuntu Repositories.
If your Linux system has an Education submenu then you should find the icon within it. If not, look in the Accessories submenu.
You can always use Mozo (MATE Menu Editor) or Alacarte to manually add the calculator to any menu of your choice.
Type: Application
Name: KCalc
Command: kcalc
Comment: Calculator which offers many mathematical functions, such as trigonometric functions, logic operations, and statistical calculations
Next, click the square icon on the left and locate an icon for the program. Then click the OK button when you finish in the Create Launcher dialog box to close it. You can then click on the Move Up or Move Down button in the Main Menu dialog box to move the icon and program in alphabetical order. Then click the Close button to exit the Main Menu dialog box.
Type: Application
Name: KCalc
Command: kcalc
Comment: Calculator which offers many mathematical functions, such as trigonometric functions, logic operations, and statistical calculations
Next, click the square icon on the left and locate an icon for the program. Then click the OK button when you finish in the Create Launcher dialog box to close it. You can then click on the Move Up or Move Down button in the Main Menu dialog box to move the icon and program in alphabetical order. Then click the Close button to exit the Main Menu dialog box.
When you start KCalc for the first time, the calculator will only display buttons for basic arithmetic computations.
Under the menu entry Settings it is possible to select a mode for KCalc: it is possible to choose Simple, Science, Statistic, or Numeral System mode.
Configure KCalc
You can customize or configure KCalc by clicking on the Settings menu and then Configure KCalc...
You can customize or configure KCalc by clicking on the Settings menu and then Configure KCalc...
When the Configure -- KCalc dialog box appears, you will notice four tabsor sections on the left: General, Font, Colors, and Constants.The General tab will be the first selected or it is selected first by default. This section alows you to set the Precision, Grouping, and Misc (other) settings.
The next section allows you to change the font used on the buttons or Button font and the Display font.
The next section allows you to change the Button & Display Colors. You can click on a button to bring up a Select Color dialog box.
Since I use a dark background theme on my system, I use Color name: #232627 for my Foreground Display Color and all my Background Button Colors.
I use Color name: #FAFAFA for my Background Display Color and all my Foreground Button Colors.
The next section or last section is Constants. There are many (mostly physical) predefined constants, which can be put on any of the six buttons C1 - C6 by selecting the desired constant in the popup menu that appears after right clicking on one of the constant buttons and selecting Choose from List. Though the predefined constants can also be accessed via the Constants in the menu bar, storing it on a constants button is very handy, if the number is used frequently.
Example: You can click the drop-down arrow to he right of Predefined and select a topic or menu. You should see fine menus: Mathematics, Electromagnetism, Atomic & Nuclear, Therodynamics, and Gravitation.
Selecting Pi will display its symbol (π) under Constants and the valvue 3.1415926535897932384 of it next to the symbol. The number π is a mathematical constant, approximately equal to 3.14159... It is defined in Euclidean geometry as the ratio of a circle's circumference to its diameter, and also has various equivalent definitions. The number appears in many formulas in all areas of mathematics and physics.
Memory Operations
KCalc supports the memory operations given by standard calculators plus six slots to hold constants. KCalc can remember results of operations for you, and re-use them in later calculations. You can access these functions via several buttons labeled MR, MS, M+ and MC.
Example of a Trigonometric Function:
("SOHCAHTOA" is a helpful mnemonic for remembering the definitions of the trigonometric functions sine, cosine, and tangent.)
("SOHCAHTOA" is a helpful mnemonic for remembering the definitions of the trigonometric functions sine, cosine, and tangent.)
Using Sine to find missing side on right triangle.
I think this is a great little calculator to install on your Linux system. Below is a link to the KCalc handbook for more details on using the calculator.
Nov 9, 2021