Flashcards
The central processing unit
Cards in this deck (10)
- 1What does the CPU do?Carries out (executes) all of the stored program instructions
- 2What does the CU (control unit) do?Controls components of the CPU
- 3Where is the decoder?In the CU (control unit)
- 4What does the decoder do?Interprets program instructions and tells the ALU (arithmetic logic unit) what operations to carry out
- 5What does the clock do?Controls the rate at which program instructions are carried out, by sending control electrical signals at regular intervals, called cycles.
- 6What does the ALU (arithmetic logic unit) do?Performs arithmetic and logical operations to carry out program instructions
- 7What are the buses? What do they do?Electrical conductors that carry electrical signals between components in the CPU and between the CPU and other components on the motherboard.
- 8What are the registers? What do they do?They are memory locations and some perform special functions in the fetch-decode-execute cycle
- 9What is the cache?Very fast random access memory (RAM)
- 10What are the four different types of registers used in the fetch-decode-execute cycle?- Program counter
- Memory data register
- Memory address register (MAR)
- Accumulator
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- Flashcards on The central processing unit, created by William Henderson on 15/02/2019.
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- William Henderson
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