2. Keyboard 08/21/10 PCTE, Baddowal 3. 2 button Mouse with
scroll wheel 08/21/10 PCTE, Baddowal 4. 2 Button Mouse with scroll
wheel
- A ball in the bottom of the mouse rolls on the surface as you
move the mouse.
- Internal rollers sense the ball movement and transmit the
information to computer via the cord of the mouse.
- If the ball is dirty, mouse does not roll smoothly.
08/21/10 PCTE, Baddowal 5. Optical Mouse 08/21/10 PCTE, Baddowal
6. Optical Mouse
- Does not use rolling ball.
- Uses light and a small optical sensor, which detects the motion
of the mouse.
- Problem of dirty mouse ball is avoided by using optical
mouse.
08/21/10 PCTE, Baddowal 7. Wireless Mouse 08/21/10 PCTE,
Baddowal 8. Wireless Mouse
- Communicates through Bluetooth mostly.
- Needs external batteries.
08/21/10 PCTE, Baddowal 9. Touchpad of a Laptop Computer
08/21/10 PCTE, Baddowal 10. Touchpad
- It consists of a special surface which translates the motion
& position of users fingers to a relative position on the
screen.
- Commonly used in laptops as a substitute for a mouse.
08/21/10 PCTE, Baddowal 11. Touchscreen
- Most simple, intuitive, and easiest to learn of all input
devices.
- Enables users to choose from available options by simply
touching with their finger the desired icon or menu item displayed
on the screen.
08/21/10 PCTE, Baddowal 12. Touchscreen
- Most preferred human-computer interface used ininformation
kiosks and ATMs.
08/21/10 PCTE, Baddowal 13. Mobile with Touch screen and QWERTY
keyboard 08/21/10 PCTE, Baddowal 14. Touch screen ATM 08/21/10
PCTE, Baddowal 15. Trackpoint 08/21/10 PCTE, Baddowal 16. Trackball
Mouse 08/21/10 PCTE, Baddowal 17. Trackball in a laptop 08/21/10
PCTE, Baddowal 18. Joystick 08/21/10 PCTE, Baddowal 19. Light Pen
08/21/10 PCTE, Baddowal