Computer Science for IGCSE & O level - Data Transmission (Section 15 - No. 21)
What is the purpose of check digits in applications like ISBNs or vehicle identification numbers?
To improve data encryption.
To prevent unauthorized access.
To detect errors introduced by typing or scanning.
To shorten the length of the number.
คำอธิบาย
Check digits are designed to identify errors, such as mis-typed numbers.