EMERGING TRENDS IN COMPUTING
INTERNET OF THINGS IOT
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Question
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A method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths and spacings of parallel lines.
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ZigBee
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WIFI
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Barcode
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RFID
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Sensors and Smartphones
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Explanation:
Detailed explanation-1: -Laser method A laser beam is reflected off a mirror and swept left and right to read a bar code Using laser allows reading of distant and wide bar code labels.
Detailed explanation-2: -Barcode stores product related data like the date of manufacturing, expiry date, name of the manufacturer, country of the origin and price quantity of the product. There are two types of barcode one is 1D and other is 2D (2 dimensional).
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