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Systems Architecture Flashcards
Cards in this deck (13)
- 1ALUPerforms logical and arithmetic calculations
It also acts as a gateway between primary memory and secondary storage. Data transferred between them passes through the CPU - 2CUControls and coordinates all of activities taking place in CPU
(FIRM)
Fetches, decodes and executes instructions
Issues control signals that control hardware
Receives signals from the system clock
Moves data around the system - 3CacheMemory that provides fast access to frequently used instructions and data without having to go to the main memory (RAM).
- 4Memory Address Register (MAR)Stores the location in memory to be used by the MDR.
Holds the address of where data is to be fetched or stored. - 5Memory Data Register (MDR)Holds data fetched from, or to be written to the memory.
- 6Program Counter (PC)Holds the address of the next instruction
- 7AccumulatorStores the results of calculations
- 83 factors that affect CPU performanceCache size, number of cores, clock speed
- 9Embedded SystemsComputers built into other devices
(dedicated systems) - 10'Fetch' stage of fetch-execute cycleFetches the next instruction from main memory (RAM)
Brings it back to CPU - 11'Decode' stage of fetch-execute cycleInspects instruction
Works out what it needs to do - 12'Execute' stage of fetch-execute cycleCarries out information / instruction
(This could cover many things such as: going back to main memory and grabbing some data; performing a calculation or storing information back into main memory) - 13RegistersSmall amounts of high-speed memory contained within the CPU
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- GCSE Computing (1.1 Systems Architecture) Flashcards on Systems Architecture Flashcards, created by Holly B on 19/04/2021.
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- Holly B
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