Microprocessor
The correct sequence of steps in the instruction cycle of a basic computer is

 Read effective address, Decode, Fetch and Execute.
 Fetch, Execute, Decode and Read effective address.
 Fetch, Read effective address, Decode and Execute.
 Fetch, Decode, Read effective address and, Execute.

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Microprocessor
The stack pointer register in a microprocessor

 counts the number of programs being executing on the microprocessor
 holds the address of the top of the stack
 keeps the address of the next instruction to be fetched
 counts the number of instructions being executing on the microprocessor

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