Input output hardware

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  • 1. Input and Output Hardware Chapter No.6
  • 2. Group Members
    • Mr. Nafees Ahmed Khan
    • Mr. Yasir Munawar
  • 3. Hardware
    • The bodily object of a Technology
    • The Physical Components of a Computer
    • Some are connected by software while the others are plug-n-play
    • It include:
          • Input Devices
          • Output Devices
  • 4. Linking People and Hardware
    • People enter data through Input Hardware and then receive results of processing through Output Hardware.
  • 5. Input Devices
    • Devices use to enter data in computer
    • It includes devices :
          • Keyboard
          • Pointing Devices
          • Scanners
          • Microphone
  • 6. Keyboard
    • Every Computer contains Keyboard
    • Looks like a typewriter
    • Most widely used
    • Inputs letters, numbers and other symbols
  • 7. Pointing Devices
    • The motion of movement of pointing devices is converted to similar movement on a monitor
    • It includes :
          • Mouse
          • Track ball
          • Joystick
          • Light Pen
  • 8. Scanners
    • Scanners allow input of printed data
    • Reads text, photographs and graphics
    • Process of Scanning:
          • It converts data into light and dark picture element or pixels
    • Types of Scanners
          • Flatbed Scanner
          • Handheld Scanner
          • Color Scanner
  • 9. Other Input Devices Touch Sensitive Screen Digital Camera Sensors Credit Card Readers
  • 10. Output Devices
    • Devices that gives out result of the entered data
    • Three Categories:
          • Permanent Output
          • Temporary Output
          • Action Output
  • 11. Permanent Output Devices
    • Computer processed information in the form of printed documents, drawings and microfilms
    • It includes:
        • Printers:
        • Plotters
  • 12. Printers
    • It gives hard copy to the organization for routine business correspondence , billing and accounting information
    • For example : Architects use to compute budget
    • Types of Printers:
      • Impact Printers
          • DeskJet
          • Dot matrix
      • Non Impact Printers
          • Laser Printer
          • Electrostatic Printer
  • 13. Plotters
    • It gives output in the form of graphs, maps, charts and drawings
    • For example: Artist uses plotters for the different sketches
    • Types of Plotters:
        • Flatbed Plotters
        • Drum Plotters
  • 14. Temporary Output Devices
    • Video displays and audio responses
    • Also provide output for immediate temporary use
    • Includes:
      • Video Display Output
          • CRT (Cathode Ray Tube) Monitor
          • Flat screen
      • Speech synthesizer
  • 15. Action Output Devices
    • Consist of processing data to initiate some form of movement or process to control activity
    • Types of Action Output:
        • Computer Numerical Control (CNC) Machine
        • Computer Aided Machine (CAM)
        • Robotics