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2.  Which of the following is an output device?

                                 a.  Plotter                                      b.  Scanner

                                 c.  Pen Drive                                    d.  Joystick


                        3.  Which of the following is a processing device?

                                 a.  Webcam                                       b.  CPU


                                 c.  Plotter                                      d.  Projector

                        4.  Which of the following is a storage device?

                                 a.  CD                                           b.  Mouse


                                 c.  Microphone                                   d.  Speakers



                        Fill in the blanks with the correct words.



                                    Hints  Application software, Hardware, Operating system, ALU


                        1.                       is a part of computer that we can touch and see.
                        2.                       is used to perform a particular task.

                        3.                       is a system software.

                        4.                       is used to perform arithmetic calculations.



                  Q     Answer the following questions:
                    A
                        1.  What is a scanner?



                        2.  What is a microphone?


                        3.  What is an IPO cycle?





                        4.  What is the main difference between system software and application software?









                                                                                   #Computer Hardware and Software  17
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