Fetch Execute Cycle in Computer Architecture

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Questions and Answers

What is the primary function of the fetch stage in the Fetch Execute Cycle?

To output the results of the execution
To execute the instructions
To retrieve an instruction from computer memory (correct)
To decode the instructions

What happens to the instructions during the decoding stage?

They are broken down and dispersed throughout the CPU (correct)
They are executed in the CPU
They are retrieved from memory
They are written back to memory

What is the purpose of the execute stage in the Fetch Execute Cycle?

To perform the desired operation (correct)
To break down the instruction into smaller parts
To retrieve an instruction from memory
To output the results of the execution

What is the final stage of the Fetch Execute Cycle?

<p>Writeback (B)</p> Signup and view all the answers

What is the role of the CPU during the execute stage?

<p>To execute the instructions around various parts of the CPU (B)</p> Signup and view all the answers

Flashcards

Fetch Stage

Retrieves an instruction from computer memory.

Decoding Stage

Breaks down instructions and distributes them within the CPU.

Execute Stage

Performs the operation specified by the instruction.

Writeback Stage

The final stage of the Fetch Execute Cycle.

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CPU Role in Execute Stage

Executes instructions across different CPU parts.

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Study Notes

Fetch Execute Cycle

Fetch involves retrieving an instruction from computer memory to run a program.
Decoding breaks down the retrieved instruction into smaller parts that are dispersed throughout the CPU.

Execution

The broken-down instructions are executed in various parts of the CPU to perform the desired operation.

Writeback

The CPU outputs the results of the executed instructions in the writeback step.

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Description

Understand the fetch execute cycle, a process that retrieves instructions from memory, decodes them, executes them, and outputs the results. Learn how the CPU performs these steps.