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Function Keys
There are 12 function keys from F1 to F12 at the top of the keyboard. Each function
key has a different job to perform.
F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12
Function keys
Caps Lock Key
Caps
This key is used to type letters in capitals. When we press Caps Lock
Lock key once on the keyboard, the Caps Lock light will turn on.
Caps Lock key
You can then type capital letters.
For example:
When the Caps Lock is ON
C P U CPU
→
Tab Key Tab
You can press the Tab key to move the cursor several spaces
forward at once. Tab key
Escape Key
Esc
The short form of the Escape key is Esc. It is placed at the top-left
corner in most of the keyboards. This key allows us to cancel a task.
Escape key
MOUSE
A mouse is a pointing device. It displays an arrow on the screen,
called as pointer.
Computer mouse
Types of Computer Mouse
Have you seen different types of mouse? ............................
All computer mouse look same, but they are of different types. The different types
of mouse are:
Optical Mouse
An optical mouse is the most popular type of mouse. It has an
LED sensor at its bottom that helps the pointer on the screen
to move. If you pick up the mouse, you will see a red-light glow
Optical mouse under it.
Keyboard and Mouse 31

