Page 63 - AI Ver 1.0 Class 9
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Output Devices

            An output device is a physical component that converts the processed data or information into a human readable
            format.
            Some of the commonly used output devices are:


            Monitor (Visual Display Unit)
            Monitor is a standard output device that is similar to a television screen. It is also
            known as Visual Display Unit (VDU) or console. An input from any input device such
            as a keyboard can be seen on the screen simultaneously. There are different types of
            monitors available in the market depending on the size and color.

            These days the most widely used monitors in computers, tablets, smartphones, Smart
            TV, etc. is LCD (Liquid Crystal Display). Its screen is made up of smaller elements called
            pixels. Resolution of any display unit is the number of horizontal and vertical pixels.
            A higher resolution provides a smoother, sharper, clearer image.                          Monitor


            Printer
            A printer is an output device that is used to get the output on a physical medium like paper. The output on the
            screen is called a soft copy whereas the output from the printer is called a hard copy. It can be used to print both
            text and graphics. The two most common types of printers used these days are inkjet and laser printers.

                                           Inkjet Printer
                                           Inkjet printers are  also called  photo  printers.  They  are  used  to  print  both  in
                                           colored or black & white format for home or small business purposes. The speed
                                           of an ink-jet printer is measured by the number of Pages Per Minute (PPM).
                                           Mostly ink-jet printers print from 12 to 36 pages per minute.
                    Inkjet Printer

            Laser Printer
            A laser printer works just like a photocopy machine that prints the output at high-
            speed and good quality. It creates images using a laser beam and powdered ink
            called toner. It is more expensive than inkjet printers and can be used for home or
            business purposes.

                                                                                                   Laser Printer

                                           Plotter

                                           A plotter is an output device similar to a printer but used to print vector graphics
                                           like architectural designs, maps, computer aided drawings etc. by plotting lines
                                           using a  pen.  A printer  uses a  technology  of joining closely spaced  series of
                                           small dots to print whereas a plotter draws using a pen. Multicolor plotters use
                                           different-colored pens to draw in different colors.
                     Plotter
            Speakers

            Speakers are an output device that produce sound waves in the form of an output
            which can be heard by a listener. Speakers can be attached to a computer or to
            any other system like smartphones, tablets, Smart TV, etc. to enhance the volume
            and the quality of audio output. The different kinds of speakers range from simple,
            two-speaker output devices to surround-sound multi-channel units.                       Speakers

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