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Memory Unit (MU)                                                                       CPU

                 The CPU also has a memory like human beings. It stores the data and                Memory Unit
                 instructions that you give to the computer along with the results of the
                 processing.                                                                        Control Unit

                      Output Devices

                 The result we get after processing is called Output. The devices which          Arithmetic Logic Unit
                 help us to get these results or outputs are called output devices. Let us
                 study about some of the commonly used output devices.


                 Monitor

                 A monitor looks like a television. It is also known as a Visual Display Unit
                 or VDU. The monitor shows the data that you input and its result (output)
                 after the computer processes it.


                                             Speakers

                                             Speakers are used to hear music, voice and sound on a computer.




                 Headphones

                 Headphones are used to listen to music and sound without disturbing others
                 as they are worn by an individual. But wearing them for a long time can
                 affect your hearing power and cause damage to your ears.


                 Printer

                 A printer is used to print the result of the work done by the computer on
                 paper. We can print documents, drawings, images, etc. in black & white as well as in color using
                 a printer. There are two types of printers.


                 Laser Printer

                 It uses a laser beam to print the hard copy.




                                             Inkjet Printer

                                             It sprays ink on the paper to print the hard copy.














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