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Basic steps used by the processor in instruction processing are?
Wiki User
∙ 11y ago
1.Fetch the most instructions from memory.
2.Read an apparend if required by the instruction.(Apparend is a quantity to be operated as directed by its associated instruction.)
3.Execute the instruction.(Do what the instruction says.)
4.Write the result backe into memory.(If required by instruction.)
Wiki User
∙ 11y ago
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Why pipelining used in 8086?
8086 is a pipelined processor. In 8086 to speed up the execution of a program,instruction fetching and executing the instruction are overlapped each other.This is a part of pipelined technique.
What are The CPU performs four steps in executing an instruction?
Three steps is probably minimal, and not really sufficient to describe the processing a CPU performs. If you have to use 3, probably fetch (the instruction), execute (the instruction) and store (write the results). However, this skips fetching the operands (if any). Most instructions require one or more operands. If you assume the instruction is already fetched, you might classify the three steps as fetch the operand(s) (read them from memory), execute the instruction (perform an operation on the operands) and store (write the results to memory). I think you will find it is more fetch, decode and execute are the three steps a CPU performs
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What are the steps a CPU performs?
Three steps is probably minimal, and not really sufficient to describe the processing a CPU performs. If you have to use 3, probably fetch (the instruction), execute (the instruction) and store (write the results). However, this skips fetching the operands (if any). Most instructions require one or more operands. If you assume the instruction is already fetched, you might classify the three steps as fetch the operand(s) (read them from memory), execute the instruction (perform an operation on the operands) and store (write the results to memory). I think you will find it is more fetch, decode and execute are the three steps a CPU performs
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