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How do barcodes work?

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Bar codes were created to help grocery stores speed up the checkout process. UPC bar codes,which stand for 'Universal Product Code' were first used in grocery stores. Every store item needs a different code so that it can be scanned correctly. The last digit of a UPC bar code is called the check digit and is calculated by the other 11 digits. For example, if you were to find the check digit for the UPC code 63938200039...: 1.) Add together all the digits in odd positions (1,3,5,7,9,11) 6 + 9 + 8 + 0 + 0 + 9 = 32 2.) Multiply the number by 3 32 x 3 = 96 3.) Add together all the digits in even positions (2,4,6,8,10) 3 + 3 + 2 + 0 + 3 = 11 4.) Add the sum to the value in Step 2 96 + 11 = 107 5.) Take the answer 107. To create the check digit, determine the number that, when added to the number 107, is a multiple of 107 107 + 3 = 110 So, the check digit is 3. A Barcode is an optical machine-readable representation of data.
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Is a barcode reader an input or an output?

its a input   A bar code scanner is an input because it sends data into a  computer or other processing device.   There are three important components of a  barcode

What is the application of a barcode recorder?

A Barcode Recorder is used to read barcodes and store the  information found in the code. The barcode recorder can be used for  taking inventory in a store, checking out boo

How has barcode scanners changed over the years?

Day by day implementations is needed so new technologies comes and  that way changes we can see in new scanners . You can see some new  and old scanners here Intercode Solut

When were barcodes introduced?

  The first patent for a bar code type product (US Patent #2,612,994) was issued to inventors Joseph Woddland, Jordin Johanson and Bernard Silver on October 7, 1952. It

How does a barcode reader read barcode?

A barcode reader (or barcode scanner) is an electronic device for reading printed barcodes. Like a flatbed scanner, it consists of a light source, a lens and a light sensor tr

What is the meaning barcode scanner barcode reader?

A barcode reader (or barcode scanner) is an electronic device for reading printed barcodes. Like a flatbed scanner, it consists of a light source, a lens and a light sensor tr

What is a barcode?

A barcode is a series of lines and numbers that you see on  packaging of products. The barcode is machine-readable and provides  information such as description and price of

Why are barcodes useful?

Barcodes were initially designed and is still used today as a  inventory tracking method by companies to keep tabs on stock  availability on their products, as well as for l