Operating System (OS)
The Memory Address Register

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".
contains the address of the memory location that is to be read from or stored into.
is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.
None of these
is a hardware memory device which denotes the location of the current instruction being executed.

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Operating System (OS)
Which of the following is not true about documentation?

Documentation gives better understanding of the problem
All of these
None of these
Documentation increases the maintenance time and cost
Documentation, of a system, should be as clear and direct as possible

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