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15 Cards in this Set
- Front
- Back
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What does CPU stand for and what does it do?
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CPU stands for Central Processing Unit. The CPU processes data for the computer
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Where does CPU fetch the data and instructions from and where does it store them?
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The CPU fetches data from the main memory. It is then stored in its own internal memory areas.
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For the fetch part of the cycle to happen, the CPU places the address of the next item in a vital hardware path. What is this called?
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The address bus
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Data from this bus then moves from the main memory into the CPU by travelling along another bus. What is its name?
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Data bus
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The next step is for the CPU to make sense of the instructions, what is this process called?
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Decoding
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The CPU decodes the instructions but what does it do next?
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It prepares various areas within the chip
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What is the name of the part of the cycle where the actual data processing takes place?
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Execute
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The CPU reads data and programs kept on the backing storage, but where does it store it?
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Immediate Access Store (IAS)
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Why does the CPU need to store data and programs in the IAS?
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Because the backing storage/hard disk is too slow to run the applications directly.
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How many instructions can a computer process at any one time?
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One
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How is the clock speed measured?
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1 Cycle per second / 1 Hertz
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The faster the speed the better the performance, but what is the downside of this fact?
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The computer can overheat.
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What is dual core?
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Dual core are two CPUs in a computer system
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What is volatile memory?
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Volatile means that when the computer is turned off, the memory stored is now lost
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What is IAS?
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Immediate Access Store
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