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12 Cards in this Set
- Front
- Back
It fetches and executes instructions to allow software to run
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Like a brain, it controls information and tells other parts what to do.
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The CPU receives data input by the user, processes information and executes commands
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It does this by doing three basic steps
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The CPU uses its ALU (Arithmetic/Logic Unit) to perform mathematical operations
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Moving data from one location in memory to another
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Making decisions and jumping to a new set of instructions based on those decisions
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It controls and monitors the hardware, the input and output devices and the flow of data
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It holds the data and programs needed by the computer
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It processes the data by performing logic and calculations
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Fetch - Decode - Execute
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Fetches Data/Instructions
Decode the Instructions to make sense of them Execute the instruction |
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The Control Unit
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Controls and monitors the hardware
Controls the input and output of data Controls the flow of data |
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Immediate Access Store
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Stores the programs needed instantly
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Arithmetic and Logic Unit
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Performs calculations
Deals with logic |
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The performance of a CPU is measured in hertz
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Only one instruction can be executed at a time
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Address bus
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Data bus
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Cache
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immediate storage but will be lost when computer is shut down
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