Input and Output

Ergonomic Keyboard

- a computer keyboard designed with ergonomic considerations
- minimize muscle strain and a host of related problems.
- constructed in V shape ,allows right and left hands to type at a slight angle more natural to human form.
- such as split keyboard, contoured keyboard and angled split keyboard.

Inkjet Printer

- A class of printer in which small ink droplets are sprayed electrostatically from a nozzle onto a paper.
- Very quiet in comparison to impact printers.
- Example, Olivetti BJ 10.

Laser Printer

- A common type of computer printer that rapidly produces high quality text and graphics on plain paper.
- with digital photocopies and multifunction printers (MFPs)
- 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 Recognition

- known as MICR
- used by banking industry to facilitate the processing of cheques
- allows technology to read numbers or information off printed documents.
-characters are printed in special typefaces with a magnetic ink or toner which contains iron oxide.
-Character pass over the head before it produces an unique waveform which can be identified by the system.

Optical- character Recognition

- recognized as OCR
- Mechanical translation of scanned images of handwritten, typewritten or printed text into machine- encoded text
- convert books, documents into electronic files, to computerize a record- keeping system in an office or to publish text on websites.
-possible in editing the text, searching vocabularies or phase, storing it more compactly, displaying or printing a copy free of scanning artifacts and apply techniques.

Optical Mark Recognition

- work with dedicated scanner device that shines a beam of light onto the form paper.
-using form which are preprinted onto 'transoptic' paper and measure the amount of light which passes through the paper, thus a mark on either side of the paper will reduce the amount of light passing through the paper.