In putdevices

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In putdevices

  1. 1. Lecture # 411/21/2012 Designed by Prof. Anosha Khan PGC 1
  2. 2.  Data or instructions entered into the computers are called Input Input device is any hardware component that allows users to enter data and issuing instructions (commands) to a computer11/21/2012 Designed by Prof. Anosha Khan PGC 2
  3. 3.  Keyboards Pointing devices Scanners Image capture devices Audio capture11/21/2012 Designed by Prof. Anosha Khan PGC 3
  4. 4.  Most common input device. Ch#2 Page # 55 Keyboard consists of  Navigation keys  Alphabetic keys  Numeric keys  Special purpose keys  Function keys  Windows key 11/21/2012 Designed by Prof. Anosha Khan PGC 4
  5. 5.  Used to control the movement of Cursor/Pointer on the screen and issuing commands.  Mouse  Track ball  Touch pad  Pointing Stick  Touch Screen  Light pen  Joy Stick11/21/2012 Designed by Prof. Anosha Khan PGC 5
  6. 6.  It is a Pointing device that fits under palm of hand  Mechanical  Optical  Cordless or wireless 11/21/2012 Designed by Prof. Anosha Khan PGC 6
  7. 7.  Stationary pointing device with a ball on its top or side To move pointer, rotate ball with thumb, fingers, or palm of hand11/21/2012 Designed by Prof. Anosha Khan PGC 7
  8. 8.  Touchpad is small, flat, rectangular pointing device sensitive to pressure and motion  Move finger across surface of pad to move cursor  Tap the surface to select  Used in Laptops11/21/2012 Designed by Prof. Anosha Khan PGC 8
  9. 9.  Pointing stick is pointing device shaped like pencil eraser positioned between keys on keyboard Move with fingers11/21/2012 Designed by Prof. Anosha Khan PGC 9
  10. 10.  Touch areas of screen with finger to give commands Special monitor Screen layer with crisscrossed beams of infrared light Select by touching screen directly ATM machines use Touch Screen11/21/2012 Designed by Prof. Anosha Khan PGC 10
  11. 11.  Light Pen- Handheld input device that can detect light  Press light pen against screen surface and then press button on pen Digital Pen- Looks like a ballpoint pen, but uses pressure to write text and draw lines  Used with graphics tablets, flat electronic boards 11/21/2012 Designed by Prof. Anosha Khan PGC 11
  12. 12.  Explore Game Controllers Read Lesson 2B , Page # 7611/21/2012 Designed by Prof. Anosha Khan PGC 12
  13. 13.  The process of entering input by speaking into a microphone Voice recognition is the computer’s capability of distinguishing spoken words MIDI (musical instrument digital interface) External device, such as electronic piano keyboard, to input music and sound effects11/21/2012 Designed by Prof. Anosha Khan PGC 13
  14. 14. 11/21/2012 Designed by Prof. Anosha Khan PGC 14
  15. 15.  Allows you to take digital pictures Images viewable immediately on camera  Download to computer  Post pictures to Web Page # 8311/21/2012 Designed by Prof. Anosha Khan PGC 15
  16. 16.  Sharpness and clarity of image The higher the resolution, the better the image quality, but the more expensive the camera Pixel (picture element) is single point in electronic image  Greater the number of pixels, the better the image quality11/21/2012 Designed by Prof. Anosha Khan PGC 16
  17. 17.  Process of entering full-motion images into computer Video capture card is adapter card that converts analog video signal into digital signal that computer can use Digital video (DV) camera records video as digital signals Lesson 2B , page#8211/21/2012 Designed by Prof. Anosha Khan PGC 17
  18. 18.  Web cam is used to capture video and still images, send e-mail messages with video attachments, add live images to instant messages, broadcast live images over the Internet, and to make video telephone calls on Internet11/21/2012 Designed by Prof. Anosha Khan PGC 18
  19. 19.  Two or more geographically separated people who use network or Internet to transmit audio and video data  Whiteboard is another window on screen that can display notes and drawings simultaneously on all participants’ screens 11/21/2012 Designed by Prof. Anosha Khan PGC 19
  20. 20.  Light-sensing device that reads printed text and graphics  Used for image processing, converting paper documents into electronic images11/21/2012 Designed by Prof. Anosha Khan PGC 20
  21. 21. 11/21/2012 Designed by Prof. Anosha Khan PGC 21
  22. 22.  Device that uses light source to read characters, marks, and codes and then converts them into digital data  Optical character recognition (OCR) reads characters in OCR font  Optical mark recognition (OMR) reads hand- drawn pencil marks, such as small circles  Bar Code Reader use laser beam to read bar codes Bar codes are verticals lines having description about the product 11/21/2012 Designed by Prof. Anosha Khan PGC 22
  23. 23.  Can read text printed with magnetized ink  Banking industry almost exclusively uses MICR for check processing Point of sale (POS) terminal Records purchases, processes credit or debit cards, and updates inventory  Swipe credit or debit card through card reader or use your fingerprint  Reads customer’s personal data from magnetic strip11/21/2012 Designed by Prof. Anosha Khan PGC 23
  24. 24.  Authenticates person’s identity by verifying personal characteristic  Finger print reader  Voice verification  Signature Verification Home Task Explore input devices for Physically challenged persons11/21/2012 Designed by Prof. Anosha Khan PGC 24

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