//Copyright-Author: Morris Ng function fnBIowEanPARlTY(){ document.writeln("Left-Hand Character
Location Number:123456") document.writeln("      Character Set
Parity Pattern") document.writeln("Value of
13th Digit: ") document.writeln("") document.writeln("0AAAAAA") document.writeln("1AABABB") document.writeln("2AABBAB") document.writeln("3AABBBA") document.writeln("4ABAABB") document.writeln("5ABBAAB") document.writeln("6ABBBAA") document.writeln("7ABABAB") document.writeln("8ABABBA") document.writeln("9ABBABA")} function fnBIowEanDlG1TCaIc(){ document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("") document.writeln("
  
Step 1 Starting from 2nd digit position, add all the character values in even-numbered positions.

 
     4  711234  56789? 
  
    7+1+3+ 5+7+9 \(sum\)  =  32
  
Step 2 Multiply the sum in step 1 by constant value \"3\". 
  
   32 x 3\(product\)  =96
  
Step 3 Starting from 3rd digit position, add all the character values in odd-numbered positions.

 
  4  711234  56789? 
  
  4 +1+2+4 +6+8  \(sum\)  =25
  
Step 4 Add the product in step 2 and the sum in step 3. 
  
   96 + 25\(sum\)  =121
  
Step 5 If the sum in step 4 is a multiple of 10, the check digit is \"0\" \(zero\). Else, subtract the sum in step 4 from the next highest multiple of 10 \(i.e., the highest multiple of 10 next to the sum in step 4 is 130\). 
  
   130 - 121\(difference\)  =  9
  
 ^
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Check Digit
")}