Using GNOME Calculator
GNOME Calculator can be used to perform any of the calculations that you would normally use a scientific calculator or slide-rule for, or to replace the trigonometric and logarithmic tables generally found in the appendix of science textbooks. It is intended as a GNOME replacement for xcalc.
Basic usage
Starting GNOME Calculator opens the Main window, shown in .
To perform calculations, type in the numbers using the number keys on your keyboard, or use the 0 through 9 buttons on the main window, and the operator buttons surrounding them.
Menus
The menu bar, located at the top of the Main Window, contains the following menus:
- File
-
+ + + + + + + + + + + + + + + + ->Quit+ + + + + + + + ( Ctl-Q ) which exits from GNOME Calculator.
- Edit
-
+ + + + + + + + + + + + + + + + + + ->Edit+ + + + + + + + + ( Ctl-C ) which copies the current display.
- Help
-
About shows basic information about GNOME Calculator, such as the author's name and the application version number.
Buttons
The buttons, located on the Main Window, are as follows:
- 1/x
-
Inverts the current display.
Example 1. 1/x
When 10 is displayed, pressing 1/x will cause GNOME Calculator to display 0.1.
- x^2
-
Raises the current display to the second power.
Example 2. x^2
When 5 is displayed, pressing x^2 will cause GNOME Calculator to display 25.
- SQRT
-
Calculates the square root.
Example 3. SQRT
When 81 is displayed, pressing SQRT will cause GNOME Calculator to display 9.
- CE/C
-
This button clears the display.
- AC
-
This button clears the display and all queued commands.
- INV
-
The INV is used to invert some operations in GNOME Calculator.
Example 4. INV
The INV can be used to compute the arcsine of a number. If the display shows 1, pressing INV, followed by sin, yields a result of 90, assuming that the units display is set on DEG.
- sin
-
Computes the trigonometric sine. The units used are displayed on the second button down on the right column of buttons.
Example 5. sin
When the display shows 90 and the units display shows DEG pressing sin will cause GNOME Calculator to display 1.
- cos
-
Computes the trigonometric cosine, or compliment's sine. The units used are displayed on the second button down on the right column of buttons.
Example 6. cos
When the display shows 60 and the units display shows DEG, pressing