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Question: What is Program counter?

Answer: Program counter holds the address of either the first byte of the next instruction to be fetched for execution or the address of the next byte of a multi byte instruction, which has not been completely fetched. In both the cases it gets incremented automatically one by one as the instruction bytes get fetched. Also Program register keeps the address of the next instruction.



Category Microprocessor Interview Questions & Answers - Exam Mode / Learning Mode
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Question: What is Program counter?
Answer:

Program counter holds the address of either the first byte of the next instruction to be fetched for execution or the address of the next byte of a multi byte instruction, which has not been completely fetched. In both the cases it gets incremented automatically one by one as the instruction bytes get fetched. Also Program register keeps the address of the next instruction. Source: CoolInterview.com


program counter is used to identify the address of next location Source: CoolInterview.com

Answered by: divya | Date: 7/20/2010 | Contact divya Contact divya


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