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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

