TECHNOLOGY

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Across
  1. 2. a substance used to stimulate immunity to a specific virus
  2. 5. branch of science that deals with the physical universe
  3. 8. a circular object that helps the vehicle to move easily over the ground
  4. 9. a machine for washing dishes automatically
  5. 12. a piece of related data records for a computer
  6. 13. a panel of keys that operate a computer
Down
  1. 1. a pair of earphones joined by a band placed over the head, for listening music
  2. 3. a secret word or phrase that must be used to gain admission to a place
  3. 4. a machine for printing text or pictures, linked to a computer
  4. 6. a device for reintroducing energy to a battery
  5. 7. copy data to the computer system from the internet
  6. 10. navigation dependent on information received from satellites
  7. 11. an electrical device for drying a person's hair by blowing warm air over it