EAN - 13 Bar Code symbol format



EAN-13 numbers are represented by an EAN-13 Bar Code symbol.

The format is:



* 	left light margin area

*	start quard bars

*	"left half"- six digits from number sets A or B

*  	centre guard bars

*	"right half"- six digits from number set C

*	stop quard bars							

*	right light margin area



See Figure 4-2





                



The bar code symbol itself comprises 12 symbol characters. The

13th human readable digit is not represented by a symbol character.



The 13th digit is always the digit in the left most position of the

EAN-13 number.



The remaining 12 digits in the number are represented by symbol

characters, in sequence from left to right.