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Sunday 26 June 2011

Input and Output

Ergonomic Keyboard
An ergonomic keyboard is a computer keyboard designed with ergonomic to minimize muscle strain and a host of related problems. The keyboards are constructed in V shape to allow right and left hands to type at a slight angle.


Inkjet Printer
Inkjet printer is a type of computer printer that creates a digital images by propelling droplets of ink onto paper. Inkjet printer is the most commonly used type of printer and range from small inexpensive consumer models to very large professional machines.


Laser Printer
Laser printer is a common type of computer printer that rapidly produces high quality text and graphics on plain paper. It employ a xerographic printing process, but different from analog photocopiers in that the image is produced by the direct scanning of a laser beam across the printer's photoreceptor.


Magnetic-ink Character Recognition
Magnetic ink character recognition is a character recognition recognition technology used primarily by the banking industry to facilitate the processing of cheques. The technology allows computers to read information off printed documents.





Optical-Mark Recognition
Optical Mark Recognition also called Optical Mark Reading and OMR is the process of capturing human-marked data from document forms such as surveys and tests.  It devices work with a dedicated scanner device that shines a beam of light onto the form paper.

Optical-Character Recognition
Optical character recognition is the mechanical or electronic translation of scanned images of handwritten, typewritten or printed text into machine-encoded text. It is widely used to convert books and documents into electronic files, to computerize a record-keeping system in an office, or to publish the text on a website.


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