communication electronics puzzle

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Across
  1. 6. Communication signals are transmitted from Earth to a .... in space.
  2. 8. To control the cursor on a computer, we often use a ....
  3. 9. The opposite of wired is .... communication.
  4. 12. The computer’s output is shown on a ....
  5. 13. A timing function in circuits is controlled by an ....
  6. 15. Current flow can be reduced by using a ....
  7. 17. Radios and phones need an .... to send and receive signals.
  8. 18. The electrical energy is stored inside a ....
  9. 20. A .... is used in headsets to capture sound waves.
Down
  1. 1. Electrical signals are changed into sound through a ....
  2. 2. Images are displayed after being received by a ....
  3. 3. The strength of a wireless connection is shown by the ....
  4. 4. An electronic circuit often uses a .... to store charge.
  5. 5. Sending messages over distance is called ....
  6. 7. When powered, a .... produces light in a circuit.
  7. 10. A weak signal can be made stronger with an ....
  8. 11. At night, people use a .... powered by batteries to see in the dark.
  9. 14. Amplifying and switching are the main functions of a ....
  10. 16. Data is stored permanently i electronic ....
  11. 19. Current can only pass in one direction if a .... is used.