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Gesture Recognition Camera

            A gesture recognition  camera is a motion  input device.  Motion
            input lets the user guide the 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

                                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 handwritten, typewritten or 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  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
                                   The 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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