Thursday, November 4, 2010
magnetic stripe readers
Bar code scanners
A barcode reader, also known as a barcode scanner, is an electronic device capable of reading printed barcodes on different objects. It operates simply by pointing the light source which is a scanner at the black and white barcode. That sends an inscribed message to the computer it is linked to.
radio tag
A radio tag is the piece of hardwair that is detected through radio frequency identification by a device, that serves as a terminal, capable of detecting this tag using signals. It is similar to a sticker and is placed on objects that need tracking.
magnetic ink character recognition (MICR)
Magnetic ink character recognition is yet another form of character recognition. This process functions by a machine capable of reading a specific type of ink. The scanner is then able to process what it scanned into chracters. For well printed MICR documents, the "character not recognised" rate is usually less than 1% while the substitution rate of a character is in the order of 1 per 100,000 characters.
Optical character recognition (OCR)
Optical character recognition is the scanning of images and 'handwritten, typewritten or printed text into machine encoded text' according to wikipedia. Functioning similarly to an OMR, optical character reading devices are more develloped.
Optical mark recognition (OMR)
An optical mark recognition device contains a scanner that shines a beam of light on a form or paper. This scanner is capable of recognizing certain marks or patterns at predetermined positions on the paper. Often the paper is filled out by a human and then submitted to the optical mark reader’s scanner.
Keyboards, mice, touch pads
Input and output devices
- Keybords, mice, touchpads.
- Optical mark recognition (OMR), optical character recognition (OCR), magnetic ink character recognition (MICR), radio frequency identification (RFID), radio tag, bar code scanners, magnetic stripe readers.
- Microphones.
- Smartcard readers.
Monday, November 1, 2010
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