________ holds address of the active memory location.
Correct Answer: Option 3: Memory Address Register
Explanation:
Memory Address Register (MAR): This dedicated CPU register holds the memory address of the active memory location currently being accessed for a read or write operation. When the CPU needs to fetch data from or write data to memory, it places the target address into the MAR.
Other Options:
Stack pointer: Holds the memory address of the top of the stack (used for managing function calls and local variables).
Program Counter (PC): Holds the address of the next instruction to be fetched and executed.
Instruction Register (IR): Holds the actual instruction that is currently being decoded and executed, not a memory address.
Similar Questions
Which among the following statements is incorrect?
- _______viruses are embedded in a system's memory so it can be reactivated if the original virus is deleted.
Which among the following statements is incorrect about secondary memory?
- ______memory is sometimes used to increase the speed of processing by making current programs and data available to the CPU at a rapid rate.
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Which among the following statements is incorrect?
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Important Questions from Memory
One Exabyte is equal to ______.
Which of the following memory is volatile?
- 1 GB consists of:
Which of the following needs to be refreshed to retain data even when power is on (electric current flows)?
Which of the following is NOT an external memory?
