barcode upc ( universal product code) commonly known as barcode “barcodes are black and white...
TRANSCRIPT
![Page 1: Barcode UPC ( Universal Product Code) Commonly known as barcode “Barcodes are black and white lines of varying widths followed underneath by a series](https://reader035.vdocuments.us/reader035/viewer/2022062321/56649da65503460f94a9134a/html5/thumbnails/1.jpg)
Barcode
UPC ( Universal Product Code)
Commonly known as barcode
“Barcodes are black and white lines of varying widths followed underneath by a series of numbers.”
Consists of 12 numerical digits, which are uniquely assigned in each trade item.
Most common form is UPC-A.
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WHAT DO THESE
NUMBERS
MEAN?
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FORMATTING
Most common formatting used today is the UPC-A
Composed of 3 segments Manufacturer’s number ( 6-9 digits) Product number ( 2-5 digits) Check number
Number SystemVariations
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FORMATTING…
Product category – first number Manufacturer’s Number – the next 5 digits Product Number – the next 5 digits; defines
the specific productCheck Number- the last digitEAN – 13 is the superset of UPC ( adding a
digit at the beginning of the UPC) but this does not change the check digit.
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CHECK DIGITS
1. Add the digits in the odd-numbered position (first, third, fifth, etc.) together and multiply by three.
2. Add the digits in the even-numbered positions (second, fourth, sixth, etc.) to the result in step 1.
3. Find the result modulo 10.4. If the result is not zero, subtract the result from ten.
Universal Product Code. In Wikipedia, the free encyclopedia.Retrieved February 28, 2013 from (http://en.wikipedia.org/wiki/Universal_Product_Code)
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EXAMPLE
03600029145x where x is the unknown digitAdding the odd-numbered digits:(0 + 6 + 0 + 2 + 1 + 5) * 3 = 14(3) = 42Adding the even-numbered digits:( 3 + 0 + 0 + 9 + 4 ) = 16Add 42 + 16 = 58Calculate: 58 modulo 10 = 8Subtract from 10: 10 – 8 = 2Therefore the check digit is 2.
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STOP!
LET’S HAVE A SHORT
EXERCISE
!
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4 8 0 00 1 6 0 4 2 3 2 X
4 8 0 0 2 1 6 1 1 0 0 6 Y
6 9 4 7 5 0 3 7 6 3 4 6 Z
Solve for the check digit.
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Number System
0, 1, 6, 7, 8 – most products2 – local use ( fruits, vegetables and meat)3- drugs4 – local use (loyalty cards or store
coupons)5 – coupons ( can be doubled or tripled)9 – coupons ( can’t be doubled or tripled)
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VARIATIONS
UPC-E ( zero suppressed version of UPC)EAN – superset of UPCUPC-5 - 5 digit supplement of UPC UPC-C - 12 digit code with a check digitUPC-D - variable length code (12 digits or
more) with the 12th digit being the check digit
UPC-B - 12-digit version of UPC with no check digit
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Click icon to add picture
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STEPS
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•Double every odd-numbered digits•Add these new digits to the undoubled ones.•Note: All double digit numbers are added as a sum of their digits.•If the fi nal sum is divisible by 10 then the credit card number is valid.
Example
4417 1234 5678 9113
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STOP!
LET’S HAVE A SHORT
EXERCISE
!
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5125 7105 2232 8114
Try to see if the credit card is valid.
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References:
Universal Product Code. In Wikipedia, the free encyclopedia. Retrieved February 28, 2013, from (http://en.wikipedia.org/wiki/Universal_Product_Code)
Summers, Veronica. How to decode a barcode algorithm. (n.d.). Retrieved February 28, 2013, from (http://www.ehow.com/how_7831271_decode-barcode-algorithm.html)
Johnson, Kimberly. How to Understand Barcodes. (n.d.). Retrieved February 28, 2013, from,(http://www.ehow.com/how_6150154_understand-barcodes.html)
Moore, Ann. Barcode Interpretation. (n.d.) Retrieved February 28, 2013, from (http://www.ehow.com/facts_7916928_barcode-interpretation.html)
Cracking the Credit Card Code. ( January 20, 2011.) Retrieved February 28, 2013, from (http://www.mint.com/blog/trends/credit-card-code-01202011/)