COMPUTER PERIPHERALS
DIGITAL CAMERAS AND CAMCORDERS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In a supermarket, when the barcode has been read, then the followings happen, except:
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The barcode number is looked up in the stock database (the barcode is known as the KEY FIELD in the stock item record); this key field uniquely identifies each stock item.
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When the barcode number is found, the stock item record is looked up
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The price and other stock item details are sent back to the checkout or POS (POINT OF SALE) terminal.
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The cashier types in the product ID
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Explanation:
Detailed explanation-1: -Laser scanners direct the laser beam back and forth across the barcode. As with the pen-type reader, a photo-diode is used to measure the intensity of the light reflected back from the barcode.
Detailed explanation-2: -A barcode includes information about products such as their price and weight, production and expiration dates, manufacturer’s name, and so forth.
There is 1 question to complete.