Output Unit


 
 
Concept Explanation
 

Output Unit

Output Unit:

Output device receives the data from the CPU and displays it. Monitor is the most familiar type, as it provides a visual representation of the binary code within a computer's CPU. Other devices include scanners, printers, etc. where information can be sent.

Some common output devices are;

  • Visual Display Unit (Monitor)
  •  Printers
  •  Speakers
  • Output Devices

    An output device is any piece of computer hardware equipment used to communicate the results of data processing carried out by an information processing to the outside world. Some of the commonly used output devices are monitor, printers, plotter, speaker, headphone projector etc. which are described below.

    Monitor

    It is also known as Visual Display Unit (VDU). The monitor is provided along with the computer to view the display result. A monitor is of two kinds; monochrome display monitor and colour display monitor. A monochrome display monitor uses only one colour to display text and colour display monitor can display 256 colours at a time. An image on the monitor is created by a configuration of dots, also known as pixels. The refresh rate of monitor is measured in Hertz (Hz). The clarity of image depends on three factors which are as follows.

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    Sample Questions
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    Question : 1

    The rate at which scanning is repeated in a CRT is called _______________

    Right Option : A
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    Explanation
    Question : 2

    ____________ printer is the cheapest in terms of price and operating cost

    Right Option : D
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    Explanation
    Question : 3

    The number of pixels displayed on a screen is known as the screen __________________

    Right Option : A
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    Explanation
     
     


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