Pareesé's crossword puzzle

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Across
  1. 4. the speed at which instructions are executed
  2. 6. brain of the computer
  3. 8. used to express the Clockrate
  4. 9. how a CPU represents numbers
  5. 10. arithmetic logic unit
  6. 11. microscopic switches that control the flow of electricity
  7. 12. =more than 18 quintillion
Down
  1. 1. =more complicated numbers
  2. 2. is better but means more money
  3. 3. a CPU is a specific type of microprocessor
  4. 5. manages the various components of a computer
  5. 6. serves as high speed memory
  6. 7. refers to a underlined architecture of a CPU