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2. what does MAR stand for?

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

3. what is the use of the mbr?

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

4. what does the program counter store?

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

5. what is the use of the ALU

  • controls the data bus to regulate its network
  • decodes data before executed
  • where arithmetic and logic problems are performed
  • commands the entire CPU

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