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2. The 5 Best Printers for Families, Tested by Kids and Parents

   www.aol.com/5-best-printers-families-tested...

   HP. School-aged kids love having access to a mini portable photo printer that they can use at home, all on their own. This option from HP—which prints exclusively in 4 x 6 inch sizes—is an ...

3. Barcode reader - Wikipedia

   en.wikipedia.org/wiki/Barcode_reader

   Barcode reader. A stationary barcode scanner for a conveyor line. A barcode reader or barcode scanner is an optical scanner that can read printed barcodes and send the data they contain to computer. [1] Like a flatbed scanner, it consists of a light source, a lens, and a light sensor for translating optical impulses into electrical signals.

4. Barcode printer - Wikipedia

   en.wikipedia.org/wiki/Barcode_printer

   A barcode printer is a specialized device designed to create and print barcodes, which are machine-readable codes consisting of parallel lines or a matrix of squares. These barcodes serve various purposes across different industries. Here are some common uses of barcode printers: 1.Retail Industry: Product Labeling: Barcode printers are used to ...

5. Printer (computing) - Wikipedia

   en.wikipedia.org/wiki/Printer_(computing)

   A video showing an inkjet printer while printing a page. In computing, a printer is a peripheral machine which makes a persistent representation of graphics or text, usually on paper. [1] While most output is human-readable, bar code printers are an example of an expanded use for printers. [2]

6. Self-checkout - Wikipedia

   en.wikipedia.org/wiki/Self-checkout

   NCR Corporation model of self-service checkout at an IKEA store. Self-checkouts ( SCOs ), also known as assisted checkouts ( ACOs) or self-service checkouts, are machines that provide a mechanism for customers to complete their own transaction from a retailer without needing a traditional staffed checkout. When using SCOs, customers scan item ...

7. Universal Product Code - Wikipedia

   en.wikipedia.org/wiki/Universal_Product_Code

   A UPC barcode. The Universal Product Code (UPC or UPC code) is a barcode symbology that is used worldwide for tracking trade items in stores.. The chosen symbology has bars (or spaces) of exactly 1, 2, 3, or 4 units wide each; each decimal digit to be encoded consists of two bars and two spaces chosen to have a total width of 7 units, in both an "even" and an "odd" parity form, which enables ...