COMPUTER HARDWARE
INPUT DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Bar code:black and white vertical lines, QR code matrix of filled in dark squares
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Bar Code supports more character
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QR code is the earliest of the two bar codes
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None of the above
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Detailed explanation-1: -Data Matrix codes are also the only 2D barcode to have GS1 approval for regulated healthcare items. QR codes on the other hand are larger and contain more data, such as website URLs, and are capable of encoding information not just in numeric and alphanumeric form, but also in Kanji and other multi-byte character sets.
Detailed explanation-2: -But does a QR code must be black and white? Of course not. QR code can be either colorful or recognizable only if it can be detected in binarization. Colorful QR code can not only leave people a deeper impression, but it can also convey more information than standard QR code.
Detailed explanation-3: -Barcode stores numbers in a printed format where the computer can understand. QR code is a two dimensional printed representation of data used to scan and retrieve data. Barcode in different stores to track all purchased products and also in hospitals for tracking the patient record etc.