Point & Draw devices

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Point & Draw devices

  1. 1. Input/Output Devices
  2. 2. Keyboard 08/29/10 PCTE, Baddowal
  3. 3. 2 button Mouse with scroll wheel 08/29/10 PCTE, Baddowal
  4. 4. 2 Button Mouse with scroll wheel <ul><li>A ball in the bottom of the mouse rolls on the surface as you move the mouse. </li></ul><ul><li>Internal rollers sense the ball movement and transmit the information to computer via the cord of the mouse. </li></ul><ul><li>If the ball is dirty, mouse does not roll smoothly. </li></ul>08/29/10 PCTE, Baddowal
  5. 5. Optical Mouse 08/29/10 PCTE, Baddowal
  6. 6. Optical Mouse <ul><li>Does not use rolling ball. </li></ul><ul><li>Uses light and a small optical sensor, which detects the motion of the mouse. </li></ul><ul><li>Problem of dirty mouse ball is avoided by using optical mouse. </li></ul>08/29/10 PCTE, Baddowal
  7. 7. Wireless Mouse 08/29/10 PCTE, Baddowal
  8. 8. Wireless Mouse <ul><li>Communicates through Bluetooth mostly. </li></ul><ul><li>Needs external batteries. </li></ul>08/29/10 PCTE, Baddowal
  9. 9. Touchpad of a Laptop Computer 08/29/10 PCTE, Baddowal
  10. 10. Touchpad <ul><li>Its a pointing device. </li></ul><ul><li>It consists of a special surface which translates the motion & position of user’s fingers to a relative position on the screen. </li></ul><ul><li>Commonly used in laptops as a substitute for a mouse. </li></ul><ul><li>Also used in PDAs. </li></ul>08/29/10 PCTE, Baddowal
  11. 11. Touchscreen <ul><li>Most simple, intuitive, and easiest to learn of all input devices. </li></ul><ul><li>Enables users to choose from available options by simply touching with their finger the desired icon or menu item displayed on the screen. </li></ul>08/29/10 PCTE, Baddowal
  12. 12. Touchscreen <ul><li>Most preferred human-computer interface used in information kiosks and ATMs. </li></ul>08/29/10 PCTE, Baddowal
  13. 13. Mobile with Touch screen and QWERTY keyboard 08/29/10 PCTE, Baddowal
  14. 14. Touch screen ATM 08/29/10 PCTE, Baddowal
  15. 15. Trackpoint 08/29/10 PCTE, Baddowal
  16. 16. Trackball Mouse 08/29/10 PCTE, Baddowal
  17. 17. Trackball in a laptop 08/29/10 PCTE, Baddowal
  18. 18. Joystick 08/29/10 PCTE, Baddowal
  19. 19. Light Pen 08/29/10 PCTE, Baddowal

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