Calculating check digits: Modulo 16
This is a description of calculating check digits according to Modulo 16.
ActiveBarcode calculates this check digits for most codes automatically.
Calculating a check digit according to Modulo 16:
Modulo 16 is used by the barcode symbology Codabar.
Here is an example of how to calculate the check digit according to
Modulo 16:
| code |
: A 7 8 9 A |
| reference digits |
: 16 7 8 9 16 |
| sum of ref. digits |
: 56 |
| modulo 16 |
: 56 / 16 = 3 remaining 8 |
| difference |
: 16 - 8 = 8 |
| check digit |
: reference number 8 = "8" |
Reference numbers:
00 = 0
01 = 1
02 = 2
03 = 3
04 = 4
05 = 5
06 = 6 |
07 = 7
08 = 8
09 = 9
10 = -
11 = $
12 = :
13 = / |
14 = .
15 = +
16 = A
17 = B
18 = C
19 = D |
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