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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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