computer topic

1. Pointing Devices

2. Definition
➢ Pointing Devices are
hardware input devices
used to control the cursor
on computer screen.
➢It is a
device through which we
can control the
movement of pointer to
select the items on screen.

3. Pointer
It is a small symbol that appears on
the screen .

4. Pointing
Devices
➢ A pointing Device can
be used to select text,
graphics and other objects
such as:
o Buttons
o Icons
o Menu Commands

5. Types of
Pointing
Devices
➢ Mouse
➢ Trackball
➢ Pointing Stick
➢ Touchpad OR Trackpad

6. Mouse
•It is a device that control
the movement of
cursor or pointer on
display screen.
• As we move the mouse,
the cursor on display
screen moves in the same
direction.

7. Types of
Mouse
➢Mechanical Mouse
➢Optical Mouse
➢Air Mouse
➢Touch Mouse
➢Wireless OR Cordless Mouse

8. Mechanical Mouse
➢ A mechanical mouse is a
computer mouse that contains a
metal or rubber ball on its
lower side.
➢ When the ball is rolled in any
direction, sensors inside
the mouse detect this motion and
move the on-screen mouse pointer
in the same direction.

9. Optical Mouse
➢ An optical mouse is a computer
mouse which uses a light source,
typically a light-emitting diode.
➢ It contains no ball inside it.
➢ It is more expensive then
mechanical mouse.

10. Wireless OR
Cordless Mouse
➢ A cordless mouse, also
called a wireless mouse, is
a mouse that connects to a
computer without the use of
wires.
➢ It transmits data using Radio
waves or Infrared Light
waves.

11. Air Mouse
➢ Air Mouse is a Motion-Sensing
mouse.
➢ It controls the objects by moving
the mouse in specific
directions through the air.

12. Touch Mouse
➢ It is a Touch-Sensitive
mouse.
➢ It works on recognizes the
touch gestures.

13. Trackball
➢A trackball is a different kind of
computer mouse.
➢ It is a plastic containing
a ball on the top that moves a
computer cursor around on the
screen. The user can move
the ball with their thumb or
fingers, and sensors inside the
case detect which direction
the ball is moving.

14. Trackball
➢ The advantage of trackballs
over mouse is that
the trackball is stationary so it
does not require much space to
use it.
➢ You can place a trackball on
any type of surface, including
your lap.

15. Pointing Stick
➢ It is a pressure-sensitive
device.
➢ A pointing stick is a small
joystick used as a pointing
device typically mounted
centrally in a computer
keyboard.
➢ It requires no additional space
cleaning like mouse.

16. Touchpad or
Trackpad
➢It is a small flat surface over
which the user moves his finger.
➢It is also as Trackpad.
➢The movement of finger moves
the cursor on screen.

17. Touchpad
It is a pointing device has a
tactile sensor.

18. THE END