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14 Cards in this Set
- Front
- Back
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Name and describe 3 parts of the CPU |
Control unit-manages execution of instructions, fetch from memory, decodes it, and execute Intermediate access store-stores all programs while in use, each memory location has an address Arithmetic and logic unit-processes data which requires calculations, performs logical comparisons using AND OR and NOT operators |
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What is the PC |
Program counter Stores the address of the next instruction to be fetched, 1 is added evrytime |
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What is the MAR |
Memory address register The address of the instruction or data being executed is temporarily stored here |
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What’s the MDR |
Memory data register
This register will temporarily store data being fetched from or written to the main memory of the CPU. All data transferred from main memory to the CPU goes via the MDR. |
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What’s the difference between MAR and MDR |
Mar temporarily stores the address of the data being executed MDR temporarily stores data being fetched |
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What’s the IR |
Instruction Register Temporarily stores the current instruction to be decoded then executed |
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What’s the accumulator |
Part of the ALU The default location for complete calculations done the the ALU |
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What is clock speed |
representation of how many instruction cycles the CPU can deal with in a second |
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What’s the cache |
Small capacity memory located between the processer and ram |
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Why’s it quicker to search the cache instead of the ram |
Lower storage capacity compared to ram |
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Processor core |
single processor with its own control unit, ALU and registers |
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What will more processor cores mean in a cpu |
ed CPUs contain more than one core which will increase their ability to run many programs at the same time |
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HD storage media |
High definition storage media Used to store high definition data such as films without any loss of quality |
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Two advantages and two disadvantages of a graphics digitiser |
Advantages: More natural More accurate and detailed drawings
Disadvantages Expensive Not suitable for selecting menus |
