Point & Draw devices

1. Input/Output Devices

2. Keyboard
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3. 2 button Mouse with scroll wheel
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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.
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5. Optical Mouse
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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.
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7. Wireless Mouse
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8. Wireless Mouse
•Communicates through Bluetooth mostly.
•Needs external batteries.
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9. Touchpad of a Laptop Computer
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10. 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.
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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.
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12. Touchscreen
•Most preferred human-computer interface
used in information kiosks and ATMs.
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13. Mobile with Touch screen and
QWERTY keyboard
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14. Touch screen ATM
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15. Trackpoint
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16. Trackball Mouse
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17. Trackball in a laptop
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18. Joystick
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19. Light Pen
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