Bar code scanner -- know properties

Bar code scanner is portable or fixed equipment used to obtain information from the bar code.A bar code scanner by a code reader and decoder.These devices are connected to a computer via a compatible port
First, the most basic and most inexpensive barcode scanner consists of a fixed lamp and a photoelectric sensor.Bar code scanner modern polygonal mirror and the use of laser scanning technology.Laser barcode printer has the advantages of reading bar code from any angle.
Bar code scanners have different varieties, such as handheld, hands-free, wear-resisting, rugged, scanning engine, laser and digital.Pen wand scanners is the simplest and most portable such.Bar code must let them direct contact and held a precise explanation of bar code.Modern digital cameras have sufficient resolution, while capturing two of 1 D and 2 D bar code.
Bar code scanner can be classified as follows:
Result: also known as the CCD scanner scanner, even though CCD is photo imaging sensor in fact, and not the light source.
Laser scanner: more expensive than leadership but usually long distance maximum scanner.
Scanning imager: these scanners to an image of a linear bar code, generally more rugged because they have no moving parts.
Two-dimensional bar code scanner: these imaging scanner to 2D images can be used to scan a 2D barcode types such as Datamatrix as well as the more common linear bar code type in the camera and.
Hand-held scanner: shank, usually a trigger button switch of light.
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