Mshana Jr
Platinum Member
- Aug 19, 2012
- 359,955
- 828,648
- Thread starter
- #521
A barcode is read by a scanner that shines a laser or light across the black bars and white spaces.
The scanner measures how much light is reflected and converts this pattern into digital data.
The different widths of the bars and spaces represent numbers encoded according to a fixed standard like EAN or UPC.
The numbers printed below the barcode are only for humans and are not what the scanner reads.
Together, the encoded numbers identify the registered company, the product, and include a check digit to prevent errors.
The scanner measures how much light is reflected and converts this pattern into digital data.
The different widths of the bars and spaces represent numbers encoded according to a fixed standard like EAN or UPC.
The numbers printed below the barcode are only for humans and are not what the scanner reads.
Together, the encoded numbers identify the registered company, the product, and include a check digit to prevent errors.
