Saidmuratov Bobur Input Devices



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Input and Output devices(Saidmuratov Bobur 220-17)

220-17 Saidmuratov Bobur

Input Devices

  • Input device captures information and translates it into a form that can be processed and used by other parts of your computer.

  • Keyboards

    Pointing devices

    Game controllers

    Scanners

    Styluses

    Microphones

    Digital cameras

    Web cams


The keyboard is the most common input device. Types of keyboards include:

  • Wireless
  • Multimedia and one-touch access
  • Portable keyboards for PDAs

Types of Input Devices

Pointing Devices


Various pointing devices are available

Types of pointing devices:


  • Mouse

  • Mechanical mouse

    Optical mouse

    Wireless mouse

  • Trackball
  • Touchpad
  • Pointing stick

Game Controller


Game controllers are used mainly to play games

Types of gaming devices


  • Gamepads
  • Joysticks
  • Gaming wheels
  • Force feed

Specialized Input Devices


Other types of input devices include:
  • Scanners
  • Styluses
  • Microphones
  • Digital cameras
  • Web cams

Scanner

  • Scanner is a light sensitive device that helps you copy or capture images, photos, and artwork that exist on paper. Types of scanners include:
  • Flatbed

Styluses

  • Stylus is an input device consisting of a thin stick that uses pressure to enter information or to click and point
  • Styluses are used with:

  • PDAs

    Tablet PCs

    Graphics tablets

Microphones

  • Microphones are used to input audio
  • Three main types of microphones are:

  • Desktop microphones

    Headsets

    Directional microphones

  • Speech recognition is increasingly being included in application software

Output Devices


Output devices take information within your computer and present it to you in a form that you can understand

 Main output devices:

 Monitors

 Printers

 Speakers

Flat Panel Display Devices


Devices with flat-panel displays
  • Tablet PCs
  • PDAs
  • Cellular phones
  • Desktop computers

Monitors


 CRTs

 Flat-panel displays

 Gas plasma

 LCD (liquid crystal display)

 Passive matrix

 Active matrix

 Called TFT (thin film transistor)

 Separate transistor for every pixel


Printers


 Inkjet – most popular

 Makes images by forcing droplets through nozzles

 Top speed is 20 pages per minute

 Laser


 Forms images using an electrostatic process

 Prints between 3 and 30 pages per minute


Speakers


A speaker is a device that produces computer output as sound

Speakers are common devices in computer systems Examples include:


  • Built-in speaker
  • Two-device set speakers
  • Surround sound speakers

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