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Plotter
                  A plotter is used to print big sketches, diagrams and maps on long sheets
                  of paper. They are used by engineers, architects, scientists and designers.



                                               Projector

                                               A projector projects or displays data of computer screen on a large
                                               screen or surface for audience.





                  Smartboard

                  A smartboard is used in classrooms as a teaching tool. It is an interactive board that displays
                  information with the help of a projector.



                       Storage Devices

                  The devices that are used to store data are called Storage devices. There are many storage
                  devices to store our data or work, so that we can get it back whenever we need it. Let us discuss
                  about some of the commonly used storage devices.




                  Hard Disk

                  The hard disk is permanently fixed in the system unit. It is used to store large
                  amount of data.





                                       Compact Disc
                                       The CD drive reads information stored on a compact disc (CD). CD is an
                                       external storage device. It can hold upto 700 MB of data.







                  DVD
                  These look like CD but they can store a large amount of data.





                                           Pen Drive

                                           It acts as a portable hard drive and is easy to use. Pen drive has storage

                                           capacity of upto 1TB.



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