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  2. Barcode reader - Wikipedia

    en.wikipedia.org/wiki/Barcode_reader

    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. Additionally, nearly all barcode readers contain decoder circuitry ...

  3. 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. Some common uses of barcode printers include: Retail Industry. Product Labeling: Barcode printers are used to ...

  4. Barcode - Wikipedia

    en.wikipedia.org/wiki/Barcode

    A barcode or bar code is a method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths, spacings and sizes of parallel lines. These barcodes, now commonly referred to as linear or one-dimensional (1D), can be scanned by special optical scanners, called barcode readers, of which ...

  5. QR code - Wikipedia

    en.wikipedia.org/wiki/QR_Code

    Whereas a barcode is a machine-readable optical image that contains information specific to the labeled item, the QR code contains the data for a locator, an identifier, and web-tracking. To store data efficiently, QR codes use four standardized modes of encoding: (I) numeric , (ii) alphanumeric , (iii) byte or binary , and (iv) kanji . [ 4 ]

  6. 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 durable 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 ]

  7. Ticket-in, ticket-out - Wikipedia

    en.wikipedia.org/wiki/Ticket-In,_Ticket-Out

    A ticket from a slot machine at Caesars Palace in Las Vegas, Nevada. Ticket-in, ticket-out (TITO) is a technology used in modern slot machines and other electronic gambling machines in which the machine pays out the player's money by printing a barcoded ticket rather than dispensing coins or tokens. The player may then redeem the ticket for ...

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