Architecture of the CPU

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Across
  1. 3. data register data written to and from memory
  2. 6. stores results of arithmetic calculations
  3. 7. logic unit performs calculations
Down
  1. 1. unit decodes instructions
  2. 2. counter stores next instruction to be fetched
  3. 4. address register Holds the address in memory that the CPU needs to access
  4. 5. stores frequently used instructions