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Operating Systems Concepts - Section 9 :: Discussion
| 11. | The instruction register | |
| A. | is a hardware memory device which denotes the location of the current instruction being executed. | |
| B. | is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory. | |
| C. | contains the address of the memory location that is to be read from or stored into. | |
| D. | 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". | |
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