Barcode Readers - UPC-A'S Flashcards
1
Q
How do UPC-A systems work?
A
The UPC-A system uses long guard bars to show the start and end of the barcode and also central guard bars to distinguish left uniquely from right.
2
Q
What is on the left of the UPC-A system barcode?
A
The manufacturer number
3
Q
What is on the right of the UPC-A system barcode?
A
The product number
4
Q
What do UPC-A systems use to represent each data item?
A
UPC-A uses seven bar elements to form four alternating dark and light bars of varying thickness to represent each data item between the guard bars
5
Q
DONT IGNORE - GO LOOK UP THE UPC-A BARCODE ANATOMY. TRY TO FIND WHERE THE GUARD BARS ARE.
A
ok
