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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 sheet of paper. The most commonly used printers are: Dot matrix printers,
            Inkjet printers and Laser printers.

                 Dot matrix printers work like a typewriter. The printer head strikes the paper and
               ink ribbon to print a character.
                The Inkjet printer prints  line-by-line by spraying ink on a sheet of paper.
                The Laser printer use a laser beam to print on the paper.












                   Dot matrix printer
                                                           Inkjet printer                    Laser printer
            Plotters

              Plotters are just like printers but are much bigger in size. There are mainly two
            types of plotters: Drum Plotter and Flatbed Plotter.













                                      Flatbed Plotter                   Drum Plotter

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