Operate a personal computer

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Across
  1. 3. Another name for the monitor
  2. 4. Used to prevent a cyber attack
  3. 6. The Ctrl and Alt keys are always used in combination with other keys.
  4. 8. I am use to type
Down
  1. 1. Command to copy
  2. 2. Small portable device use to store files
  3. 5. You use me to scan things
  4. 7. The physical components of a computer system