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    3                       How a Computer Works

                         Goal Glimpse

                             IPO Cycle                                       IPO Devices

                     We know that a computer is a human-made machine. Have you ever wondered
                     how a computer works? In this chapter, we are going to learn how a computer

                     works.

                           IPO CYCLE

                     Have you seen your mother making mango shake for you? This is what she does to

                     make the mango shake.
                     1.     She puts the mango pieces, sugar and milk in the blender. This is the input.

                     2.     The blender mixes all the things. This is the process.

                     3.     She pours the mango shake in the glass. You can drink it now! This is the
                          output.

                                            INPUT          →   PROCESS   →  OUTPUT

                     Similarly, we give instructions to the computer, the computer then works on the

                     instructions and gives us the result.
                     The instructions that we give to the computer are called input. The working of the

                     computer is called processing and the result we get is called output.

                                                                                           How a Computer Works          27

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