Input and Output

Engonomic Keyboard



An ergonomic keyboard is a computer keyboard designed with ergonomic considerations to minimize muscle strain and a host of related problems. It is more user friendly and comfortable to be used.

Ink-jet printer


An inkjet printer is a type of computer printer that creates a digital image by inserting variable-sized droplets of ink onto paper. Inkjet printers are the most commonly used type of printer because it is reliable, quiet, cheap and relatively inexpensive. It ranges from small inexpensive consumer models to very large professional machines .

Laser Printer



A laser printer is a common type of computer printer that rapidly produces high quality text and graphics on plain paper. Laser printers uses a technology similar with digital photocopies and multifuntion printers. What makes it unique is  that the image is produced by the direct scanning of a laser beam. It works faster and are used in applications that requiring high-quality output.


- picture shows how the laser printer work.

Magnetic-Ink Character Reader ( MICR)



Magnetic Ink Character Recognition, or MICR, is a character recognition technology used primarily by the banking industry to facilitate the processing of cheques. The technology allows computers to read information off of printed documents. For example, the unusual numbers on the bottom of checks and deposit cheque.

Optical-Character Recognition (OCR)

Optical character recognition (OCR) , is a method of making printed, typewritten or handwritten data understandable and readable with a computer. OCR is generally used to store the data in a digital format from where it can be edited on a machine and, most importantly, made searchable with keywords. Next, Optical Character Recognition involves deciphering the data by a machine, converting it into a machine readable format and storing it on the machine, which is usually a computer. A common OCR device is the handheld wand reader and usually used in department stores to read retail price tags.

- The picture shows how the OCR work.


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.

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