2.0 Laptop and Portable Devices
2.1 Identify the fundamental principles of using laptops and
Function (Fn) keys:
Fn key is commonly found in notebook computers. The primary reason for
providing an Fn key in notebooks is to ensure a compact keyboard. Fn is a
modifier key on notebook keyboards and used to combine keys which are otherwise
Unlike other modifier keys such as Shift , the control circuit inside the
keyboard sends out a different key code depending on whether the Fn key is
depressed. This allows the compact keyboard to provide functionality of a full
The Fn key combinations may also be mapped to control system interfaces to
change the LCD brightness and contrast, display output, eject a CD, or adjust
speaker volume on laptop computers.
Touchpad is an input device widely used in laptop computers. It is used to
position or move the the curser according to the finger movement on the touchpad.
A touchpad is similar to that of a mouse on a desktop computer. A typical
touchpad is shown below:
When you move your finger on the
touchpad, the pointer (arrow) on the screen
moves in the same direction.
The touchpad (A) also has a right button (B) and a left button (C). Use the
left and right buttons below the touchpad to select objects, cut, paste, or drag
Stylus is a pointing and drawing device shaped like a pen, and used
with with a digitizing tablet or touch screen. The stylus point is made of
a non scratching
plastic to "write" on Personal Digital
Assitants (PDAs) or any similar device screen.
A Dell Axim stylus pen is shown in the figure above.