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Gesture Recognition Camera

                 A gesture recognition  camera is a motion  input device.  Motion
                 input lets the user guide on-screen elements using air gestures. Air
                 gestures involve moving  your  body  or a  handheld  input  device
                 through the air.  With motion input, a device containing a camera
                 detects your gestures and then converts them to a digital signal
                 that is sent to a computer or game device. For example, gamers can pull their arm back to throw
                 a javelin in the game.


                                     Barcode Reader

                                     A Barcode reader or  barcode  scanner is  an electronic  device,  used  for
                                     reading printed barcodes. Barcode readers consist of a light source, lens and
                                     light sensor that help them scan these codes.


                 Optical Mark Reader (OMR)

                 Optical Mark Reader is an input device used for capturing
                 human-marked  data  in document  forms such as tests
                 and surveys. OMR  is  used  in schools,  businesses,  and
                 healthcare  agencies  for data  input  processes  and  to
                 reduce input errors.


                                              Optical Character Reader (OCR)
                                              Optical Character Reader is used to carry out a mechanical or
                                              electronic translation of the handwritten, typewritten and printed text

                                              into machine-encoded text. It is widely used to convert books and
                                              documents into electronic files. OCR can also be attached to scanners
                                              and mobile phones.


                 Magnetic Ink Character Reader (MICR)
                 Magnetic Ink Character Reader is an input device that reads special

                 characters that are printed using a special magnetic ink on cheques
                 like  Cheque  number, bank code  and branch code. MICRs scan this
                 information and are thus capable of sorting cheques.


                                        PROCESSING DEVICE
                                        A  Central processing unit is the processing device of a computer. It is
                                        also known as the brain of the computer. It performs all the calculations
                                        and processes data into information. It receives input from input devices,

                                        processes them, and sends the processed result to the output unit. A CPU
                                        consists of three units.



                                                                                         Fundamentals of Computer  13
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