![]() ![]() If you look at a barcode, you probably can't make head or tail of It can't be confused with any other number. Stripes and its pattern is designed so that, even if you turn it upside down, These are colored in either black or white to represent the decimal numbers 0–9.Įvery number ultimately consists of four fat or thin black and white Photo: Each digit in a barcode is represented by seven equal-sized vertical blocks. They can be read very accurately at high speeds. Really need is a completely reliable way of printing numbers so that The checkout if you scanned your cornflakes the wrong way up). Nine if you turn it upside down-which could cause all sorts of chaos at With decimal numbers is that they're easy to confuse (a misprintedĮight could look like a three to a computer, while six is identical to We could simply print the number itself, but the trouble Finally, there's one or more checkout scanners that canĪ barcode is a really simple idea: give every item that you want toĬlassify its own, unique number and then simply print the number on theĬan read it. Second, there are the barcodes printed on all First, there's a centralĬomputer running a database (record system) that keeps a tally of all the products you're selling, who makes it, what each one costs, and how Stolen-and maybe move them to a more secure part of your storeĪ barcode-based stock system like this has three main parts. Missing (and don't appear to have been sold) have probably been Because barcode technology is soĪccurate, you can be reasonably confident that any items that are You can instantly see when stock levels of certain You can change pricesĪs often as you like, without having to put new price tags on all yourīottles and boxes. That tracks products, prices, and stock levels. It lets you keep a centralized record on a computer system Using barcode technology in stores can help to solve all these The shelves, can you really be certain you've sold them all? How do you What about shoplifting? If you see a lot of whisky bottles missing from Prices before you sell the goods, you have to reprice everything. You mark all your items with their prices, and you need to change the Sale? There are many other difficulties of running shops smoothly. You're running a giant branch of Wal-Mart with thousands of items on That's fine for a small store, but what if Alternatively, you could write down what people buy at theĬheckout, compile a list of all the purchases, and then simply use that Shelves looking for empty spaces and simply refilling where you need The simplest way of doing that is to walk around the You sell so you can make sure the ones your customers want to buy areĪlways in stock. ![]() If you run a busy store, you need to keep track of all the things ![]() Photo: Barcodes can be used for all kinds of inventory/stocktaking work, but they're probably most familiar to us as identification codes printed on grocery store products. ![]()
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