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Joystick: It is a pointing device that is used to control movement of a pointer

                     on your computer screen. It is mostly used to play games.



                                                                                                             Joystick
                                       Microphone: It is an input device that is used to record voice, music, and
                                      sound into the computer system. It captures sound waves and converts them
                                      into digital form.

                   Microphone
                  Output Devices

                  Output devices are used to display information or result of a computation to the user. Some of

                  the output devices are:
                                               Monitor: It is one  of the  most familiar output  devices. It is also
                                              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 per inch on the
                                              screen. The maximum number of dots per inch (dpi) will give you
                                              more clarity and  a  better  display.  Nowadays,  monitors  with  Light
                         Monitor              Emitting Diode (LED) screens have become very popular because of
                                              clarity of images and slim shape of the monitor.

                     Printer: It allows to print the work done on the computer on a sheet of paper. Printers are
                     categorised as impact or non-impact depending on their working. Impact printers create an
                     image on paper by striking the paper with a metal pen. Non-impact printers create an image
                     on paper by spraying ink on the paper. Some of the common printers are:

                    •  Dot Matrix Printer

                       It works like a typewriter. The printer head strikes the paper and
                       ink ribbon to print a character. It is an impact printer.

                                           •  Inkjet Printer                                       Dot Matrix Printer
                                             It is a non-impact printers that use ink cartridges. Printing is done line-

                                             by-line by spraying ink on a sheet of paper. It is much faster than a dot
                                             matrix printer. However, they are expensive and consume more ink. It is
                                             widely used in schools, offices, and cinema halls.
                       Inkjet Printer
                    •  Laser Printer

                       It is also a non-impact printer. It uses a laser beam to print on the
                       paper. It is much faster than an inkjet printer and the print quality also
                       superior. However, it is expensive and is mainly used in places where
                       fine quality printing is required.
                                                                                                       Laser Printer

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