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                      The speed of a CPU is measured in Megahertz. Higher the value, faster is the information
                      processed by the CPU.



                         OUTPUT DEVICES


                  The output devices are used to display the information and result of computation to the
                  user. Some of the output devices are:


                  Monitor
                  The monitor is one of the most familiar output device. It is called the
                  Visual Display Unit (VDU). The images that you see on the monitor are

                  made up of tiny dots called pixels. The clarity of the images depends
                  on the number of dots/pixels on the screen per inch.
                                                                                                        Monitor
                  Printer

                  A printer is an output device that allows you to print the work done on the computer on a                                 Exercise
                  sheet of paper. The most commonly used printers are: Dot matrix printers, Inkjet Printers

                  and Laser Printers.                                                                                                       A.  Tick (3) the correct option.
                      Dot matrix printers work like typewriters. The printer head strikes the paper and ink                                      1.  Which printers work similarly to typewriters?
                     ribbon to print a character.
                                                                                                                                                     a.  Inkjet                                    b.  Laser
                      The Inkjet printer prints  line-by-line by spraying ink on a sheet of paper.
                                                                                                                                                      c.  Dot matrix                               d.  Drum
                      The Laser printer uses a laser beam to print on the paper.
                                                                                                                                                 2.  Which input device is used to play games on the computer?

                                                                                                                                                     a.  Touchscreen                               b.  Joystick

                                                                                                                                                      c.  Microphone                               d.  Graphic Tablet

                           Dot matrix printer                     Inkjet printer                    Laser printer                                3.  Which component of CPU stores data and instructions?

                  Plotters                                                                                                                           a.  ALU                                       b.  CU
                  Plotters are just like printers but are much bigger in size. There are mainly two types of                                         c.  Memory Unit                               d.  Storage Unit

                  plotters: Drum Plotter and Flatbed Plotter.
                                                                                                                                                 4.  Which input device would you choose for entering words and numbers?

                                                                                                                                                     a.  Keyboard                                  b.  Mouse

                                                                                                                                                     c.  Scanner                                   d.  Microphone




                                             Flatbed Plotter                   Drum Plotter


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