Readable lines (barcodes). Reading a barcode. 1. Note that bar codes are made up of both white and black lines. 2. Understand that there are four different thicknesses to the lines. What are barcodes
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Reading a barcode
1. Note that bar codes are made up of both white and black lines.
2. Understand that there are four different thicknesses to the lines.
What are barcodes
A bar code is the small image of lines (bars) and spaces that is put on to trend store items, identification cards, and postal mail to identify a particular product number, person, or location.
Where are they used
We can see them everywhere around us. Almost every item other than fresh produce from a grocery store, department store, mass merchandiser etc.
Represents the type of the product
Distributor's item number
3. Recognize that each UPC bar code begins and ends with 101 (thin black, thin white, thin black)
Manufacturer's identification number
The check digit (gotten by a calculation using the other numbers of the code)