2 button Mouse with scroll wheel
08/29/10 3PCTE, Baddowal
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.
08/29/10 4PCTE, Baddowal
Optical Mouse
08/29/10 5PCTE, Baddowal
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.
08/29/10 6PCTE, Baddowal
Wireless Mouse
08/29/10 7PCTE, Baddowal
Wireless Mouse
•Communicates through Bluetooth mostly.
•Needs external batteries.
08/29/10 8PCTE, Baddowal
Touchpad of a Laptop Computer
08/29/10 9PCTE, Baddowal
Touchpad
•Its a pointing device.
•It consists of a special surface which translates
the motion & position of user’s fingers to a
relative position on the screen.
•Commonly used in laptops as a substitute for
a mouse.
•Also used in PDAs.
08/29/10 PCTE, Baddowal 10
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.
08/29/10 PCTE, Baddowal 11
Touchscreen
•Most preferred human-computer interface
used in information kiosks and ATMs.
08/29/10 PCTE, Baddowal 12
Mobile with Touch screen and
QWERTY keyboard
08/29/10 13PCTE, Baddowal