Computer Science for IGCSE & O level - Data Transmission (Section 5 - No. 41)
In the example of ISBN-13 algorithm where 978030640615X, what is the calculation algorithm is used?
Weighted sum and then divide by 10 to find remainder
Simple division by 10
Simply adding the digits together.
Weighted sum then divide by 11 to find remainder
הֶסבֵּר
A modulo 10 operation on a weighted sum of the first 12 digits.