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Ict 123 input devices

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  • 1. NURIZAH RAMLI 10D0124 DTE
  • 2.
    • Any data or instruction entered into the computer is known as INPUT.
    • An input device helps you to communicate with the computer.
    • To enter information and issue commands, you use input devices.
    • Examples of input devices:
      • Keyboard
      • Mouse
      • Scanner
      • Microphone
      • Digital Camera and Web Camera
  • 3.
    • The keyboard is the most common and widely used input device.
    • It is made up of buttons called 'keys'. The keys are arranged into sections:
    • • Alphabet keys
    • • Function or F keys (F1, F2, F3)
    • • Numeric keys (one set above the alphabet keys and
    • a numeric keypad on the right)
    • • Arrow keys
    • • Command keys (insert, delete, home, end, page up/down)
  • 4.  
  • 5.
    • A mouse is an input devices that fits comfortably under the palm of your hand.
    • A mouse is a pointing device.
    • We use mouse to control the movement of the mouse pointer on the screen and to make selections from the screen.
    • The bottom of a mouse is flat and contains a mechanism that detects the movement of a mouse.
  • 6.
    • optical mouse
      • Mouse in which the ball is replaced by an optical system (light-emitting diode and sensor); it has no movable parts.
    • wheel mouse
      • Mechanical or optical mouse that contains a scroll wheel.
    • cordless mouse
      • Mechanical or optical mouse connected to the computer by infrared or radio signals.
  • 7.  
  • 8.
    • A scanner is a light-sensing input device that reads printed text and graphics and then translates the results into a form the computer can use.
    • The image or text can be saved or changed on the computer.
  • 9.
    • bar code reader
      • Device that uses an optical scanning process to decode information contained in bar codes.
    • optical scanner
      • Equipment that converts a document’s graphics or texts into digital data.
  • 10. Optical scanner Bar code reader
  • 11.
    • microphone
      • Device that converts electric pulses into broadcast or recorded sounds.
    • A microphone allows you to record your voice to the computer.
    • It also lets you speak to other people using computers or even on the telephone.
    • A microphone is also called a mic.
  • 12.  
  • 13.
    • Web camera
      • Miniature digital camera used to transmit video images in real time or for videoconferencing over the Internet.
    • digital camcorder
      • Portable video camera in which the recording tape is replaced by a processor, which records and stores sounds and images in digital format.
    • digital camera
      • Camera that contains a sensor and a microprocessor rather than film; it records and stores images in digital form, which can then be viewed on a screen.
  • 14.