Who am I?

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Across
  1. 4. Brain of the Computer
  2. 6. Used in super market
  3. 8. To type text
  4. 9. To create Digital Drawings
  5. 11. To record sounds
  6. 12. A pointing Device
Down
  1. 1. To play games
  2. 2. To take printout
  3. 3. Used for security purpose
  4. 5. To scan pictures
  5. 7. To view large size videos
  6. 10. To listen music