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The register which holds the address of the location to or from which data are to be transferred is known as
- a)Index register
- b)Instruction register
- c)Memory address register
- d)Memory data register
Correct answer is option 'C'. Can you explain this answer?
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The register which holds the address of the location to or from which ...
MAR is a register that holds the address of location to or from which data are to be transferred.
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The register which holds the address of the location to or from which ...
Memory Address Register (MAR):
The Memory Address Register (MAR) is a register in a computer's CPU that holds the memory address to or from which data are to be transferred. It is a crucial component in data transfer operations within a computer system.
Functions of Memory Address Register:
- Address Storage: The primary function of the MAR is to store the memory address of the location where data needs to be read from or written to in the computer's memory.
- Data Transfer: The MAR works in conjunction with the Memory Data Register (MDR) to facilitate the transfer of data between the CPU and memory. The MAR specifies the address, while the MDR holds the actual data being transferred.
- Instruction Execution: During the execution of instructions, the MAR plays a critical role in fetching the instructions from memory. It holds the address of the next instruction to be fetched and executed by the CPU.
- Address Decoding: The MAR is used in the process of address decoding, where the memory controller interprets the address stored in the MAR to access the corresponding memory location.
Significance of Memory Address Register:
The MAR is essential for efficient data transfer and instruction execution within a computer system. It enables the CPU to access specific memory locations accurately, allowing for smooth operation of programs and processes.
In conclusion, the Memory Address Register (MAR) is a vital component of a computer's architecture, responsible for holding memory addresses for data transfer operations. It plays a crucial role in ensuring the seamless flow of data between the CPU and memory, contributing to the overall performance of the system.
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The register which holds the address of the location to or from which data are to be transferred is known asa)Index registerb)Instruction registerc)Memory address registerd)Memory data registerCorrect answer is option 'C'. Can you explain this answer?
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