Tuesday, January 18, 2011

Input and Output

Ergonomic keyboard

Ergonomic keyboard is a keyboard that design for to relieve some of that stress and provide a more comfortable platform for typing. Ergonomic keyboard designs to help to relieve sometimes painful conditions.

Ink-jet Printer

Ink jet printer is a type of printer that works by spraying very fine drops of ink on a sheet of paper. As the paper is put through the printer, the print head moves back and forth to spraying thousands of these small droplets on the page to print out the image.

Laser printer

Laser printer is a type of printer that use  focused beam or light to transfer text and images onto paper. but the laser will not actually burn the images onto the papers. When the papers passes through the printer, the laser beam fires at the surface of a cylindrical drum called a photoreceptor.

Magnetic-ink character recognition(MICR)

MICR name as Magnetic ink character recognition. It is a character recognition system that uses special ink and characters. When the paper pass though the printer will translates the magnetic information into characters. To use magnetic ink we need a laser printer that accept MICR toner.
Optical-character recognition(OCR)

OCR also stand for optical-character recognition. This thing allow us to scan paper that we lost in our own hard drive. But printed out, back into your computer. OCR program can convert the characters on the page into a text document that can be read by a word processing on a program.

Optical-mark recognition(OMR)

OMR also stand for optical-mark recognition. OMR scans a printed and reads predefined positions and records where marks are made on the form. This thing is very useful for applications in which large of numbers need to be processed quickly and with great accuracy.

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