COMPUTER SCIENCE AND ENGINEERING
COMPUTER ARCHITECTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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MAR
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MDR
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PC
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CIR
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Detailed explanation-1: -In a computer, the memory address register (MAR) is the CPU register that either stores the memory address from which data will be fetched to the CPU registers, or the address to which data will be sent and stored via system bus.
Detailed explanation-2: -The program counter, PC, is a special-purpose register that is used by the processor to hold the address of the next instruction to be executed.
Detailed explanation-3: -Memory Address Registers (MAR): It holds the address of the location to be accessed from memory.
Detailed explanation-4: -A memory buffer register (MBR) or memory data register (MDR) is the register in a computer’s CPU that stores the data being transferred to and from the immediate access storage. It contains a copy of the value in the memory location specified by the memory address register.