Similar to the traditional keyboards, ergonomic keyboards however is NOT rectangular and palm rest is provided. It is designed to ensure wrist strain could be avoided and make typing at ease. besides being economical it has many shortcuts keys where they are customisable and can be set for a program, command, file, folder or web page. The top five customizable keys include pre-figured keys for the Web browser, search, mail, calculator, as well as volume, mute and play/pause key.
A computer device that produces hard copy by spraying ink onto paper, ink-jet printer can produce letter-quality images up to 300 dpi (dots per inch). An ink jet can priduce 100 to several hundred pages depending on the ink catridge. Once it is emptied, it must be refilled in order to continue processing. They are reliable, quiet and relatively inexpensive.
Dubbed as the photocopying machine, the laser printer uses light beam to produce images. It comes in high quality in forms of letters and graphics. Compared to ink-jet printers, it is more expensive, however faster in producing excellent letters and images on a plain paper and usually used in applications that requires high-quality output. Two common types of laser printers are personal laser printers and shared laser printers, where one is less expensive and usually used by a single user, while the other are more expensive and shared by a group of users respectively.
Magnetic Ink Character Recognition (MICR)
Normally used by bank corporates, MICR are used to identify unusual numbers on the bottom of checks and deposit slips. A reader, designed specially for this purpose are used to read these numbers and provides input in order for bank officials to record or maintain customers' records and account balances efficiently.
Optical-character recognition (OCR)
Special pre-printed characters are used and is is read by using a light source which later changes into machine-readable code. A wand reader is used to record and retrieve these codes and it is commonly used. Codes like price tags attached to products are one of the example of an OCR, where usually retail departments read the price tgs codes by reflecting red light beams on the printed characters, or in other term, codes. Through this, information like the item's name and price is detected and appears on the screen.
Optical Mark Recognition (OMR)
Often used during school examinations, OMR senses the presence or absence of a mark, particularly pencil marks. It extracts all data on the mark field and transform it into printed forms. Multiple choice questions sheets usually use OMR in order to detect marks, faster and more efficient and is extremely common to use in schools. The amazing part of this device is the error accuracy stands at only 1%.
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