coomunication

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Across
  1. 4. Ancient method of sending message by fire
  2. 5. Form of written communication
  3. 6. Ancient method of sending messages
  4. 8. includes 0s and 1s
  5. 9. It uses Javascript to create basic mobile app
Down
  1. 1. Short message sent to a mobile phone
  2. 2. Hypertext markerup Language
  3. 3. The sound produced by beating drum
  4. 7. Electronic mail
  5. 10. Rock art technique