Most of the machine have a 2-way capability; that is, you can copy them from another register, and you can copy them to another register.  The Memory Address Register (MAR), on the other hand, is always used as a destination register; you can only copy to the MAR.  Explain why this is so

Principles of Information Systems (MindTap Course List)
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ISBN:9781285867168
Author:Ralph Stair, George Reynolds
Publisher:Ralph Stair, George Reynolds
Chapter3: Hardware: Input, Processing, Output, And Storage Devices
Section: Chapter Questions
Problem 3SAT: The time it takes to perform the fetch instruction and decode instruction steps is called the...
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Most of the machine have a 2-way capability; that is, you can copy them from another register, and you can copy them to another register.  The Memory Address Register (MAR), on the other hand, is always used as a destination register; you can only copy to the MAR.  Explain why this is so.

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