fetch-decode-execute cycle

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1. what is the use of the ALU

  • commands the entire CPU
  • controls the data bus to regulate its network
  • where arithmetic and logic problems are performed
  • decodes data before executed
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2. What does the MAR do?

  • holds the memory location of data
  • volatile memory
  • stores data under this register in the memory
  • buffers memory in the processor waiting to be executed

3. what does the program counter store?

  • the address of the next instruction
  • the next instruction
  • the number of instructions completed
  • the current instruction in the processor

4. what is the use of the mbr?

  • buffers data coming from external networks
  • where data is decoded before execution
  • to temporarily store data whilst it's waiting to be processed
  • buffers data depending on internet speed

5. what does MAR stand for?

  • major address register
  • memory address register
  • minor address register
  • main Arithmetic register


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