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(Computer Science) CPU revision
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- 1CPU stands for Central Processing UnitThe CPU can be referred as the brains of the computer. It is also known as the processor or microprocessor.
- 2The CPU usually contains a number of microprocessors (multi-core)A multi-core processor is an integrated circuit of 2+ processors for enhanced performance, reduced power consumption and more efficient processing of tasks.
- 3There are four key factors which effect a CPU performance-1) The number of cores
2) Clock speed
3) Cache size
4) Processor type - 4There are three functions of the CPU-Fetch, decode, execute
- 5The different functions are done by the following-1) Fetch - (RAM/Cache)
2) Decode (ALU) - 6There is a term called Clock speed when describing a CPU, this means-How many instructions the CPU can do in a second.
- 7The CPU can 'fetch' data from different sources, 1) being the fastest and 3) being the slowest1) Cache
2) RAM
3) Secondary storage - 8Cache stands for-The quickest form of temporary memory used by the CPU.
- 9Cache Memory has different levels-A level 1 (L1) cache is a memory bank built into the CPU chip.
A level 2 cache (L2) is a secondary staging area that feeds the L1 cache. - 10Caches are typically static RAM (SPAM), while main memory is generally some variety of dynamic RAM (DRAM).
- 11RAM stands for-Random Access Memory
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- GCSE Computing Fichas sobre (Computer Science) CPU revision, creado por Archie Geoghegan el 03/01/2017.
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- Archie Geoghegan
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