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    3.  Output device: A device used to display results after processing data is called
                         an output device. It shows the information in a form that we can understand,

                         such as text, pictures or sound.

                             Monitor                     Printer                  Speaker                Headphone

                      4.  Storage device: A device used to store data is called a storage device. Storage
                         devices are used to hold and save information on a computer, such as files,
                         pictures and videos.

                                 Hard disk                    CD                      DVD                Pen Drive

                       Clickipedia

                        CDs, DVDs, hard disks and pen drives store data for future use. They can work
                        as both input and storage devices.

                            SOFTWARE

                      Computer hardware cannot work by itself. It needs step-by-step instructions to
                      perform a task. These stepwise instructions
                      are called Software or Programs. Software
                      helps us to  give  input  to  the  computer

                      hardware.  It also helps the computer
                      hardware to process the input and convert
                      it into output.

                      Hence, software  is  a set of instructions
                      that tells  the computer how to perform

                      a specific task. The games you play on a
                      computer are examples of software.

                     20     Premium Edition-III

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