christmas mixed with computing

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Across
  1. 4. computer off
  2. 7. the height of where Santa fly's
  3. 10. zoom in
Down
  1. 1. How many colours would there be in this bitmap image? single binary digit is called
  2. 2. how Santa counts his reindeer
  3. 3. how Santa sorters your letters digitally
  4. 5. captured by a microphone
  5. 6. computer on
  6. 8. what a photo of Santa is made up by
  7. 9. a single binary digit