Pointing Devices

computer topic

1. Pointing Devices

2. Definition
➢Pointing Devices are
hardware input devices
used to control the cursor
on computer screen.
➢It is a
devicethroughwhichwe
cancontrol the
movementof pointerto
selectthe itemson 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:
oButtons
oIcons
oMenu Commands

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

6. Mouse
•It is a device that control
the movement of
cursoror 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
➢Amechanical mouseis a
computermousethat contains a
metal or rubber ball on its
lowerside.
➢When the ball is rolled in any
direction, sensors inside
themousedetect this motion and
move the on-screenmousepointer
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
➢Acordless mouse, also
called awireless mouse, is
amousethat 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
directionsthrough the air.

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

13. Trackball
➢Atrackballis a different kind of
computermouse.
➢It is a plastic containing
aballon the top that moves a
computer cursor around on the
screen. The user can move
theballwith their thumb or
fingers, and sensors inside the
case detect which direction
theballis moving.

14. Trackball
➢Theadvantage of trackballs
over mouseis that
thetrackballis stationary so it
does not require much space to
use it.
➢You can place atrackballon
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
cleaninglike 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