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    Mouse

                     A mouse is a pointing device that allows users to interact with objects
                     on the screen by moving the cursor.

                                              Touchpad

                                              A touchpad is a flat, touch-sensitive surface found in laptops.
                                              It serves as an alternative to a mouse and lets you move the
                                              cursor by sliding your finger on it.

                     Scanner

                     A  scanner turns paper documents  and images  into  digital  files,
                     allowing them to be saved and edited on a computer.

                                   Barcode Scanner

                                   A barcode scanner scans and reads barcodes and sends data to a
                                   computer. It is commonly used in retail stores.

                     Microphone

                     A microphone records sound and lets you give voice commands.

                                 Webcam

                                 A webcam is a small camera on a computer that lets you see and talk to
                                 people far away.

                     Joystick and Game Controller

                     A joystick and game controller are used for playing video

                     games and simulations.

                                                 PROCESSING DEVICE

                                                 A processing device is the part of a computer that takes
                                                 the information you provide, follows instructions to process
                                                 it and then gives you the result.

                                                                                                   Inside a Computer    9

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