Computer Science for IGCSE & O level - Algorithm Design And Problem Solving (Section 13 - No. 31)
What is the core functionality of a check digit?
To check that the data is the correct type.
To detect errors that may occur during data entry.
To check for the presence of data.
To compare two sets of data.
स्पष्टीकरण
Check digits are designed to detect entry errors.