Wednesday, February 10, 2010

On Barcode Scanners

Barcodes are those parallel lines and numbers we see printed at the back of items sold in stores. These numbers and lines, when read, gives information about a product, like its price and description.

These barcodes are read by the use of a barcode scanner. There are different kinds of barcode scanners. The cheapest is the contact wand and the most expensive is the laser scanner. Last night, I downloaded a scanner from my android phone. The feature enables me to compare prices of items and to see which ones are cheaper. The wonders of technology.

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