A barcode reader a device which is used to read barcodes printed on various products
. Its main function is to convert optical impulses into electrical ones and it consists of light sources, photo conductor and a lens.
Generally all kind of barcode scanner has circuitry examining image of the barcode and then it produce a photo after that it send the information to the output port. It is mainly used in grocery store to decode the information hidden on the coded bar.
There are different types of barcode scanner available in the market like LED scanner, image scanner, or laser scanner. Among this laser scanners are expensive and are capable of scanning longer distance. The imager has no moving part and scans the picture on the linear coded strip. The coded stripe device is also come in the shape of pen and it is used for the simple purpose meanwhile to serve the commercial purpose a fixed positioned coded device is used. It is used in the supermarket as well as the departmental stores. It is used to track the goods as well as knowing the details of the goods. By barcode scanner technique you will get to know the details about the product like year, manufacture date and expiry etc.
The device is now used in many places like bars, stores, restaurants where the purchase and sale of the goods takes place. It is not so important at early time when it is introduced but now it has become an integral part of any business. Main types of scanners are stated above let discuss them in detail.
LED- In this device a trigger is used to operate the device which takes the image. And then it is retrieve to the computer to get the necessary information about the product. These devices are very old and not used often.
Laser scanners-This is one the most popular type, used to decode the coded strip. In order to read the information it emits a thin red laser light. This provides very accurate result and there is no need to press the button in order to get the image. These are affordable and they a preferred choice these days because the accuracy it gives in.
2D scanners- This device specifically have the ability to read the 2D coded strips. The technology is similar to the imaging device.
The price range of these devices varies so first think the need of the budget to get the most appropriate one.