Input and output

Ergonomic Keyboard

It is a keyboard with ergonomic consideration to minimize the muscle strain and a host of related problems.

Ink-jet Printer

An ink-jet printer is a type of printer that creates a digital image by propelling variable-sized droplet of ink onto the paper. Most people prefer ink-jet printer and a very large range from inexpensive consumer model to very large professional machine.

Laser Printer

Laser printer is a common type of printer that print rapidly produces high quality text and graphic on plain paper. As with digital photocopiers and multifunction printers (MFPs), laser printers employ a xerographic printing process but differ 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 reader (MICR)

The technology allows computers to read information (such as account numbers) off of printed documents. Unlike barcodes or similar technologies, however, MICR codes can be easily read by humans.
MICR characters are printed in special typefaces with a magnetic ink or toner, usually containing iron oxide. As a machine decodes the MICR text, it first magnetizes the characters in the plane of the paper. Then the characters are passed over a MICR read head, a device similar to the playback head of a tape recorder. As each character passes over the head it produces a unique waveform that can be easily identified by the system.

Optical-character recognition (OCR)

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. OCR makes it possible to edit the text, search for a word or phrase, store it more compactly, display or print a copy free of scanning artifacts, and apply techniques such as machine translation, text-to-speech and text mining to it.

Optical-mark Recognition (OMR)

The process of capturing human-marked data from document forms such as surveys and tests.