Operating System (OS)
Memory

is a device that performs a sequence of operations specified by instructions in memory.
is the device where information is stored
is typically characterized by interactive processing and time-slicing of the CPU
None of these
is a sequence of instructions

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Operating System (OS)
Addressing modes

None of these
defines the fundamental method of determining effective operand addresses
All of these
performs indicated operations on two fast registers of the machine and leave the result in one of the registers.
are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing.

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