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Keyboard

                 A keyboard is probably the mostly used input device which can be either
                 wired or  wireless. It is used to accept  textual  data  from the  user.  It is
                 impossible to imagine a computer without one. A typical keyboard has a
                 typing area that includes the letters of the alphabet, numbers, punctuation
                 marks, and other basic keys similar to that of a type writer.                      Keyboard

                                    Mouse

                                    A mouse is another input device which is also known as a Pointing Device. As you move the
                                    mouse, the pointer on the screen moves. A typical mouse has two buttons and a wheel. It can
                                    be either wired or wireless.
                      Mouse

                 Scanner

                 A scanner is a device used to read the hand written notes, images, photos, and transfer
                 it in a digital form onto the computer where it can later be saved or manipulated as per
                 the requirement.
                                                                                                          Scanner

                                Light Pen
                                A light pen is a pointing device shaped like a pen and is connected to a VDU. The tip of the light
                                pen contains a light-sensitive element which, when placed against the screen, detects the light
                                from the screen enabling the computer to identify the location of the pen on the screen. We
                   Light Pen
                                generally use it to make a selection or draw anything on a screen.

                 Touchscreen
                 Touchscreen is the latest in the input devices where the input can be taken from the
                 user through a touch of a finger, stylus, or a light pen on a display screen. We can give
                 the entire set of commands by touching. Nowadays most of the laptops, Smart TV,
                 smartphones, tablets, etc. also have touch screens where the use of the keyboard is
                 minimised. It is a very useful and convenient alternative to a mouse or a keyboard in
                 a graphical user interface.                                                             Touchscreen

                                Microphone

                                Microphone is a device that converts the sound received into a digital audio form which can be
                                easily stored or manipulated in a computer.

                 Microphone

                 Barcode Reader
                 A bar code is a set of parallel lines that appear on the products as their identification.
                 You will find most of the packages having these barcodes that can be easily read by
                 barcode readers. Bar code readers work by placing a beam of light on the lines that
                 make up the bar code and detecting the amount of light that is reflected back. The
                 barcode read is then stored in the computer for preparing invoices.                    Barcode Reader

                                     MICR
                                     The bank account number and other details are printed onto bank cheques which are read
                                     by Magnetic Ink Character Recognition using a special magnetic ink. They are useful to
                                     find out whether the cheque is genuine or fake.
                       MICR
                                                                                                  ICT Skills-I  81
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