COMPUTER HARDWARE COMPONENTS FUNCTIONS
COMPUTER OUTPUT DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Barcode reader and a printer
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Keyboard, mouse and a printer
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Scanner and a printer
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None of the above
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Detailed explanation-1: -Barcodes are applied to products to quickly identify them. Among their many uses, barcodes are typically used in retail stores as a part of the purchasing process, in warehouses to track and manage inventory and on invoices to help with accounting.
Detailed explanation-2: -A barcode symbol typically consists of five parts: a quiet zone, a start character, data characters (including an optional check character), a stop character and another quiet zone.
Detailed explanation-3: -It was here, at just after 8 a.m. on June 26, 1974, that the first item marked with the Universal Product Code (UPC) was scanned at the checkout of Troy’s Marsh Supermarket. It was treated ceremonial occasion and involved a little bit of ritual.
Detailed explanation-4: -They are used as pricing tags within retail; this barcode tracks items within their stores and keeps information such as the price, where it was made, and what batch of goods it came from. In addition, a UPC barcode features the manufacturer’s information in addition to the unique product number.