One of the most common and fascinating sights we come across while in a retail market is the use of the barcode and its scanning. This technology has evolved and improved so much that now not just retail stores but even educational institutions and offices use it for maintaining a foolproof and accurate database.
No Bars on the Cordless Barcode Scanner
By [http://ezinearticles.com/?expert=Gary_Hatcher]Gary Hatcher
One of the most common and fascinating sights we come across while in a retail market is the use of the barcode and its scanning. This technology has evolved and improved so much that now not just retail stores but even educational institutions and offices use it for maintaining a foolproof and accurate database. This evolution is partly accredited to the introduction of the cordless barcode scanner. Before going into the latest technology, let's look into the mechanism and the history behind the complicated device. A barcode is a representation of data, data related to a particular product. There are two types of bar codes.
1. The linear barcodes (1-D) - the most common types of barcodes. These types of barcodes have extensive use in retailer markets.
2. The matrix barcode (2-D) - it is very similar to the linear barcodes but has a much more data representation capacity.
A barcode reader analyzes these strips and shapes of the barcode, decodes the data and sends it to the output. Barcode scanners can be classified into three categories based on their connection to the computer. The older type is the RS-232 barcode scanner. This type requires special programming for transferring the input data to the application program. Another type connects between a computer and its PS/2 or AT keyboard by the use of an adaptor cable. The third type is the USB barcode scanner, which is a more modern and more easily installed device than the RS-232 scanner. Like the keyboard interface scanner, this has the advantage that it does not need any code or program for transferring input data to the application program; when you scan the barcode its data is sent to the computer as if it had been typed on the keyboard. The technologies in barcode reading have been ever changing. Most barcodes readers use a PS/2 or USB cable for output. But changing technologies have resulted in the scanners going cordless.
The cordless barcode scanner transmits information after scanning to a computer or any other output device wirelessly using Bluetooth or radio communication. Cordless barcode scanners are ideal when a cord is an inconvenience or a safety hazard. They can also provide additional range over corded scanners, for scanning in multiple locations. They have great utility in industrial use for scanning tons of products at one go. But for retailing, the corded barcode scanners are still very popular and the cordless ones haven't had much of an impact. Modern handheld barcode scanners are operated in wireless networks such as WLAN or Bluetooth. However, such configuration limits the battery power.
The scanner resolution is measured by the size of the dot of light emitted by the reader. If this dot of light is wider than any bar or space in the bar code, then it will overlap two elements (two spaces or two bars) and it may produce wrong output. On the other hand, if a too small dot of light is used, then it can misinterpret any spot on the bar code making the final output wrong. The cordless barcode scanner has been further improved upon so that they become more accurate and replace the older USB connected scanners.
Gary enjoys writing and studying about integrative medicine. Not only does he enjoy writing about various health topics, you can also check out his latest website on the [http://cordless-barcode-scanner.net]cordless barcode scanner along with the latest cordless barcode scanner [http://cordless-barcode-scanner.net/cordless-news/]news.
Article Source: [http://EzineArticles.com/?No-Bars-on-the-Cordless-Barcode-Scanner&id=3320941] No Bars on the Cordless Barcode Scanner
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