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We all know that machines make our work faster and easier. Different types of                                                         WORKING OF A COMPUTER

            machines are designed to perform different types of tasks. Some machines are used
                                                                                                                                      As we have discussed earlier, a computer can do a lot of things. Let us understand
            to do only one type of task. For example:
                                                                                                                                      how a computer works.
               A washing machine is used to wash clothes.
                                                                                                                                      A computer works in three steps: Input                Process        Output (IPO). This is also
               A music system is used to play music.                                                                                  called the IPO cycle.

            Whereas, a computer is used to do multiple tasks. For example:
                                                                                                                                                        Input                      Process                     Output

               Search information                            Send emails

               Play games                                    Play music                                                               INPUT

               Store information                             Solve mathematical problems                                              We enter data and instructions into the computer which is called input. The devices
                                                                                                                                      which are used to send input to a computer are called input devices.

                     FEATURES OF A COMPUTER                                                                                           PROCESS

                                                                                                                                      A computer works on data (input) to produce meaningful information with the help of
            A computer has many unique features that make it a
                                                                                                                                      processing device known as the CPU (Central Processing Unit). This conversion of
            wonder machine. Some features are given below:                                                                            data into information is called processing. CPU is also called the brain of a computer.


            Speed: It does calculations at a very high speed.
                                                                                                                                      OUTPUT

                                                                                                                                      The result received after processing is called output. The devices which are used to
                                                                                                                                      display the results are called output devices.


                                               Accuracy: It  performs  calculations  without  making
                                               any mistake. However, we can get incorrect output if

                                               inaccurate data is fed into the computer.


                                                                                                                                               Input Device                    Processing Device                    Output Device



            Versatility: It performs various  types  of jobs  at  the                                                                             PARTS OF A COMPUTER

            same time.
                                                                                                                                      The computer system is made up of two parts—Hardware and

                                                                                                                                      Software. Let’s learn about hardware and software in detail.
                                                  Memory: It stores  huge  amounts  of data  and

                                                  information that can be retrieved quickly and easily                                            HARDWARE

                                                  when needed.
                                                                                                                                      The term ‘hardware’ refers to the parts of a computer that we can see and touch.

                                                                                                                                      In other words, hardware are the tangible parts of a computer system.


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