Computer Parts Crossword

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Across
  1. 4. can be "secondary" or "auxiliary"
  2. 7. main circuit board in a computer
  3. 9. brain of the computer
  4. 11. reads texts or graphics
  5. 12. device used to input data by typing it
  6. 14. required for computer to function
Down
  1. 1. programs used other than to run pc
  2. 2. instructions so pc knows what to do
  3. 3. permanent output, can be stored (printer)
  4. 5. prevents the processor from overheating
  5. 6. adds more functions to motherboard
  6. 8. allows computer to be turned off
  7. 10. method to connect devices to motherboard
  8. 13. short term, erased when pc is shut down
  9. 15. memory that can only be read, not changed