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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


                 Digital Versatile Disc or DVD: A digital versatile disc looks like a CD
                 but can store six times more data than a CD.
                                                                                                             DVD
                                       Pen drive: A pen drive is a very small and a light portable device

                                       that can store and transfer data from one computer to another.
                                       A pen drive can store more data than a CD or DVD. It is also
                    Pen drive          called a flash drive.



                                                                                                     PURE
                         The first hard disk was introduced by IBM. It could store one MP3 song only.   FACT






                           SOFTWARE


                 A computer hardware has numerous features, but it cannot perform a task until
                 certain instructions are given to it. Hardware needs step-by-step instructions to
                 perform a task. A set of instructions given to the computer to perform specific tasks

                 is called a Program. A collection of programs is called a Software. It also helps
                 the computer hardware to process the input and convert it into output. Without
                 software, a computer is like a car without fuel. Software are mainly of two types:


                                                            SOFTWARE




                                System Software                                Application Software



                                                                                            Hardware and Software  13
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