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    Monitor: A  monitor  is  an output  device  used  to  display information  processed
                      by  the computer.  Whatever  you  type  on the  keyboard  is  seen  on the  monitor.

                      The monitor is also known as Visual Display Unit or VDU. There are different types
                      of monitors:

                                      CRT                             LCD                         Touchscreen

                                     Speakers: Speakers are the output devices used to play music, voice
                                     and sounds stored in a computer. It gives an output in the form of a

                                     sound.
                       Speakers
                      Projector:  A  projector is  an output  device  used  to  display

                      videos, pictures, documents, etc., from a computer screen to
                      a large screen.
                                                                                                          Projector

                                                 Plotter: A plotter is a type of printer that draws high-quality
                                                 images  on a  very large  sheet  of  paper.  They  are  used  by

                                                 engineers, architects, scientists and designers.

                                Plotter

                      STORAGE DEVICES

                      The devices that are used to store data or information are called storage devices.

                      We can store songs, pictures, games, videos and many other forms of data on them.
                      The most commonly used storage devices are:

                      Hard disk: A hard disk is the main storage device fixed inside
                      the CPU box. It stores the  largest amount of data as compared

                      to other storage devices.
                                                                                                         Hard disk

                                      Compact Disc or CD: A compact disc or CD is a flat, circular piece of
                                      plastic with a shiny surface on one side. It stores less amount of data.

                            CD

                       12   Premium Edition-III

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