McMillenS20Wk4h1

McMillenS20Wk4h1 - 1. Name the four operations comprising a...

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1. Name the four operations comprising a machine cycle. Explain them briefly. (7 points) Answer: Step 1: Fetching. The control unit fetches the math problem’s instructions and data from memory. Step 2: Decode. The control unit decodes the math problem’s instructions and sends the instructions and data to the ALU. Step 3: Execute. The ALU performs calculations on the data. Step 4: Store. The results of the math problem are stored in memory, however, some do not compute a result so the 4th step may be omitted. 2. What is a dual-core processor? Is a dual-core processor twice as fast as a single-core? Explain why or why not. (7 points) Answer: It is a single chip that has two separate processors. It runs at a slower speed when compared to a single core processor, but it has better performance when running multiple programs at the same time. It is also more energy efficient and uses less power per core than a single processor.
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This note was uploaded on 08/31/2011 for the course COMS 103 taught by Professor Chang during the Fall '06 term at Iowa State.

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McMillenS20Wk4h1 - 1. Name the four operations comprising a...

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