//Copyright-Author: Morris Ng function fnBIowEAN13Pattern(){ document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("
Left-Hand Guard Bar---  \(Pattern 101\)
Left-Hand Six Characters of Code---Set-A_7,
Set-B_1,
Set-A_1,
Set-A_2,
Set-B_3,
Set-B_4
Center Bar---\(Pattern 01010\)
Right-Hand Six Characters of Code  ---Set-C_5,
Set-C_6,
Set-C_7,
Set-C_8,
Set-C_9,
Set-C_9 \(check digit\) 
Right-Hand Guard Bar---\(Pattern 101\)
")} function fnBIowEAN13Symbo1Legen(){ document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("
LEGEND:
A  Left-Hand Guard Bar---   3 modules
BLeft-Hand Six Characters of Code  ---7 modules
each character
CCenter Bar---5 modules
DRight-Hand Six Characters of Code---7 modules
each character
ERight-Hand Guard Bar---3 modules

  • The light \(space\) and dark \(bar\) modules are of uniform width.
  • The left-hand six characters of code has 3 odd parities and 3 even parities, except induced character \"0\" \(i.e., when the 13th digit is a zero\) which has 6 odd parities. The right-hand six characters of code uses the even parities only.
  • The left-hand odd characters have either 3 or 5 dark modules and the left-hand even characters have either 2 or 4 dark modules, while the right-hand even characters have either 2 or 4 dark modules.
    • ")}