Early Human & Communication

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Across
  1. 2. Babbage father of computer
  2. 3. instrument helps a doctor to monitor the heart
  3. 6. process of sending and receiving messages
  4. 9. cart without wheels
Down
  1. 1. inventor of radio
  2. 4. newton’s discovery
  3. 5. method used in telecommunication
  4. 7. India’s first satellite
  5. 8. invention of Thomas Edison