Computer System

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Across
  1. 3. Disk I remember everything even when the power is off.
  2. 5. I am a pointing device.
  3. 8. I convert sound waves into electrical signals.
  4. 9. You use me to type text and commands.
Down
  1. 1. I am the main circuit board.
  2. 2. I can see you and help you in video calls.
  3. 4. I forget everything when power goes off.
  4. 5. I am showing you everything that computer does.
  5. 6. I bring digital information to paper
  6. 7. I process all the instructions.