Inventions and Technology Unit 1 Vocabulary Review

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Across
  1. 2. one dot or piece of information on a CRT
  2. 5. device to boost the strength of an electrical signal
  3. 6. thick piece of flat wood used to press the paper against the letters
  4. 8. the natural frequency at which something vibrates
  5. 9. a satellite orbits around the earth at the same speed that the earth is moving so that it is always above the same point on the earth
  6. 10. different styles of letters
  7. 12. device storing information in magnetic fields or long term memory
  8. 14. continuous signal
  9. 18. parts of computer you can actually touch
  10. 20. short term memory
  11. 24. phosphor coated tube that translates electrical signals into pictures
  12. 27. code using long and short signals to represent letters
  13. 30. metal switch for completing an electrical circuit
  14. 31. a satellite moves around the earth in a stretched circle around a particular part of the earth
  15. 32. a group of satellites that orbit the earth and provide information that can be used by a receiver to accurately pinpoint the receiver's location anywhere on earth
Down
  1. 1. amplitude/height of the carrier signal is modified to fit the original signal
  2. 3. cable consisting of hundreds of tiny glass tubes that transmit pulses of light
  3. 4. a satellite moves around the earth from North Pole to South Pole and back
  4. 7. device to translate sound waves into electrical signals
  5. 11. frequency of the carrier signal is modified to fit the original signal
  6. 13. message sent by telegraph
  7. 15. device containing an electromagnet making an audible click when current flows through it
  8. 16. bulb made of semiconducting organic, carbon based material that contains electro-phosphorescent molecules
  9. 17. device to select the desired signal
  10. 19. part of computer that performs most of the calculations and controls other parts of the computer
  11. 21. series of pulses
  12. 22. mechanical device using beads to perform mathematical calculations
  13. 23. flat panel screen with liquid or plasma that responds to electrical signals
  14. 25. message is added to a carrier signal
  15. 26. another name for pixel
  16. 28. quick copy to check for mistakes
  17. 29. electronic information stored or passed through a computer