Appendix B: Bar Code Specifications

 

 

 

 

 

 

 

 

 

 

Calculating the

If you wish to encode the UPC-A data “01234567890”, follow these

Mod 10 Check Digit

steps to find the correct check digit.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ODD

0

 

 

2

 

4

 

6

 

8

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EVEN

 

1

 

 

3

 

5

 

7

 

9

 

CD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.First add all the numbers in the ODD positions. i.e., 0+2+4+6+8+0 = 20

2.Multiply the result of Step 1 by 3.

i.e., 20 x 3 = 60

3.Add up all the numbers in the EVEN positions. i.e., 1+3+5+7+9 = 25

4.Add the result of Step 2 to that of Step 3.

i.e., 60 + 25 = 85

5.Subtract the result of Step 4 from the next highest increment of 10. i.e., 90 - 85 = 5

6.The correct Modulo 10 check digit for the 11 digit string “01234567890” is 5.

Page B-6

9001069A

SATO Ct Series Printers

Page 173
Image 173
SATO CT400, CT410 manual Calculating, Mod 10 Check Digit, ODD Even