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12 Cards in this Set

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