Graduate student Bernard Silver overheard his Dean and the President of a local store. We need to take a short trip down history and first understand the development of Barcodes. It’s difficult to imagine how a simple tool like QR Code can do so much. Moreover, retailers such as Walmart use QR Codes to accept payments. And brands like Coca-Cola are using QR Codes as a marketing tool to attract new customers. Moreover, various apps such as Whatsapp and Instagram use QR Codes as a feature to add friends. ![]() This data clearly conveys an increase in QR Code reach and its usage over the years. According to Bluebite, the following trend was reported from 2018 to 2020:ĩ8% growth in the number of interactions per active object The Editors of Encyclopaedia Britannica This article was most recently revised and updated by Adam Augustyn.You must have seen black & white square-shaped barcodes on products, hoardings, and newspapers. These products range from processed foods and dry goods to drugs and medical supplies, automotive parts, computer parts, and even library books. Various barcode systems are now used to track a vast range of products as they are manufactured, distributed, stored, sold, and serviced. For example, ski resorts can affix the codes to skiers and scan the bars when skiers enter ski lifts, thereby allowing the resort to monitor patterns of slope use. The chief advantage of barcode systems is that they allow users to process detailed information at the moment the barcode is scanned, rather than simply storing information for later processing. At a typical supermarket checkout counter, a scanner is used to identify a product through its barcode, and a computer then looks up the item’s price and feeds that number into the cash register, where it becomes part of the bill for the customer’s purchases. Grocery stores use the codes to obtain price and other data about goods at the point of purchase by the consumer. This is usually the only information contained in a barcode.īarcoding was introduced in the 1970s and is now a ubiquitous part of routine commercial transactions. In the UPC system, the five digits on the left are assigned to a particular manufacturer or maker, and the five digits on the right are used by that manufacturer to identify a specific type or make of product. The barcodes printed on supermarket and other retail merchandise in the United States are those of the Universal Product Code, or UPC, which assigns each type of food or grocery product a unique code. The computer then stores or immediately processes the data in the barcode. A handheld scanner or barcode pen is moved across the code, or the code itself is moved by hand across a scanner built into a checkout counter or other surface. The numbers represented by a barcode are also printed out at its base.īarcode information is read by an optical ( laser) scanner that is part of a computer system. Most such codes use bars of only two different widths (thick and thin), though some codes employ four widths. The presence or absence of a bar of a particular width in a particular position in a sequence is read by the computer as either a 0 or 1. The bars are used to represent the binary digits 0 and 1, sequences of which in turn can represent numbers from 0 to 9 and be processed by a digital computer. The bars are typically black on a white background, and their width and quantity vary according to application.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |