SATO M8485S Operator's Manual download pdf (Page 194)

Calculating the

Mod 10 Check Digit

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

steps to find the correct check digit.

ODD 024680

EVEN 13579CD

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.

Appendix B: Bar Code Specifications

Page B-6 9001034 Rev E SATO “S” Print Engines

1 2 ... 189 190 191 192 193 194 195 196 197 198 199 ... 227 228

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SATO M8485S Operator's Manual Page 194