Flashcards
CPU and Memory Flashcards
Cards in this deck (26)
- 1What is the CPU commonly described as?The brain of the computer
- 2What does CPU stand for?Central Processing Unit
- 3What is the purpose of the CPU?To process data
- 4Put these in order: Execute, Decode, FetchFetch - Decode - Execute
- 5What happens in the "fetch" part of the fetch - decode - execute cycle?The CPU fetches data and instructions from main memory and stores them in the "registers"
- 6Explain what the computer does during the "decode" section of the fetch - decode - execute cycleThe CPU makes sense of the intructions that it has just fetched
- 7Explain what happens during the "Excecute" section of the Fetch - Decode - Execute cycleThe instruction is carried out. The result of the processing is stored in another register
- 8Name the three main parts of the CPU-Control Unit
-IAS (immediate access store
-ALU Arithmetic and Logic Unit) - 9What does the control unit do? (three points)-Controls the hardware attatched to the system to make sure the commands given to it by the application software are used
-It controls the input and output of data so that the signals go to the right place
-It controls the flow of data in the CPU - 10What does the IAS (immediate access store) Do?It holds the data and programs needed at that instant by the control unit. The CPU reads data and programs kept on the backing storage and stores them temporarily in IAS's memory
- 11What does the ALU (arithmetic and logic unit) do?Arithmatic part performs calulations
Logic part deals with logic and comparisons, eg, it works out if one value is greater, equal or less than another - 12With every tick of the clock, the CPU can process how many pieces of data or how many intructions can be executed?One
- 13What is the CPU clock speed mesured in?Cycles per second
1 cycle per second = 1 hertz - 14A computer running at 1 GHz can carry out how many instructions per second?A thousand million
- 15The higher the clock speed ......the faster the performance, but it runs hotter and consumes more power
- 16The lower the clock speed ......the lower the performance, less costy, needs less power - so good for battery life in laptops
- 17What is overclocking?Where someone adjusts their CPU so that the clock runs faster than it was originally designed to run. This makes the CPU run hotter, and so extra cooling fans may be needed
- 18What does a dual - core processor mean?It means it has two CPU's
- 19What does RAM stand for?Random Access Memory
- 20What does ROM stand for?Read Only Memory
- 21Is RAM Volitile or non-volitile?Volitile
- 22Is ROM volitile or non - volitile?Non-Volitile
- 23What is the cache?A special type of computer memory that can be accessed much faster than the RAM.
- 24Is cache memory volitile or non-volitile?Volitile
- 25What does volitile mean?When the computer is shut down, you lose all of the data that is stored there
- 26The larger the cache size, the better/worse performance?The better performance, as you are able to store more data locally
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- These flash cards cover CPU and Memory, eg. The Cache
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- Deleted user · Nov 2017
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- Nov 16, 2017
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- Created by LunaLovegood · Mar 3, 2014
- Copied by Mr Williams · Nov 16, 2017
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