Question

The index register in a digital computer is used for?

• A. Pointing to the stack address
• B. Indirect addressing
• C. Keeping track of number of times a loop is executed
• D. Address modification
• E. None of these

Answer 1

The correct option is D Address modification

An index register in a computer's CPU is a processor register used for modifying operand addresses during the run of a program, typically for doing vector/array operations.