Check digit calculation of Modulo 16

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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Check digit calculation of Modulo 16

Modulo 16