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Computer Science - Operating Systems Concepts - Discussion

Discussion Forum : Operating Systems Concepts - Section 5 (Q.No. 13)
Operating Systems Concepts
13.
The instruction register
is a hardware memory device which denotes the location of the current instruction being executed.
is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.
contains the address of the memory location that is to be read from or stored into.
contains a copy of the designated memory location specified by the MAR after a "read" or the new contents of the memory prior to a "write".
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
3 comments Page 1 of 1.
Shewangizaw bogale said:   8 years ago
Instruction register (IR) : is the part of a CPU's control unit that holds the instruction currently being executed by the CPU.

So, the correct answer will be A.
Gaurav Gupta said:   9 years ago
I think the answer is A.
Jayati said:   1 decade ago
Instruction register is used for storing current instruction. It should be A.
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