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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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