Page 14 - TP_iPlus_V2.1_Class7
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◦  Flatbed  Scanner:  It  is  a  type  of  scanner  that  uses  a  flat  glass  surface  for
                                     scanning documents. It looks like a photostat machine. Unlike a hand-held
                                     scanner, a flatbed scanner does not require movement of the document.


                  •  Sheetfed Scanner: It is a type of scanner that allows multiple papers to be
                     scanned at a time. In this type of scanner, the stack of papers is kept on top
                     and the scanner automatically scans each page one by one. It is widely used
                     in offices to scan documents.

                     Info Byte
                      The difference between a Flatbed scanner and a Sheetfed scanner is  that a Flatbed
                      scanner  scans one page at a time on a glass surface,  while a Sheetfed scanner  can
                      automatically handle and scan a stack of papers.



                  •  Webcam: It is a type of video camera that saves images or visuals in realtime
                     into a computer via USB, ethernet or Wi-Fi. Web camera is used to create
                     video links and helps us to set up authentic video conference stations. Some
                     built-in webcams can be remotely activated from far off locations. Webcams
                     can also be used for security & surveillance purposes by monitoring the captured visuals.  It is
                     smaller than the traditional camera and is generally attached to the monitor of the computer
                     or built into the hardware.

                                   •  Graphic Tablet: It allows you to directly draw on a computer screen. The
                                     device consists of a flat surface upon which you can draw with an attached
                                     stylus, that looks like a pen.

                  •  Joystick: It is a pointing device similar to a mouse, but unlike a mouse, where the
                     pointer stops moving when the device is no longer moved, a joystick’s pointer
                     continues to move in the direction the joystick is pointed until it is returned to
                     the neutral position.

                     To stop the pointer, the user has to bring the joystick to its upright position. It is generally
                    used to play video games.

                                •  Microphone: It is a voice based input device. With the help of this device, sound
                                   or voice is recognized/recorded in the computer and is converted into digital
                                   form which is then played or processed by the computer.

                  Output Devices


                  Output is the information obtained after processing of data. The user receives the result through
                  output devices. Output can be in the form of soft copy or hard copy. Soft copy refers to the
                  digital copy which lies in the storage device where as hard copy refers to the printed contents on
                  a paper or film. Some of the output devices are:



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