Circuits, Switches & everyday Communications

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This is a presentation I pulled together and presented to a class of 4th graders.

The purpose was to give them greater insight into how what they were learning (electrical circuits & switches) had everyday importance for communicating.

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  • Circuits, Switches & everyday Communications

    1. 1. Circuits, Switches and everyday Communications
    2. 2. before we talk about circuits…
    3. 3. or switches
    4. 4. we communicate Bakugan Brawl!
    5. 5. Put them together What are some of the ways we communicate?
    6. 6. Making paper. What are they doing in this picture? Paper was invented in 105 AD.
    7. 7. Making paper 101
    8. 8. Moveable type, Printing Press, 1450 Moveable type
    9. 9. Other uses…  /  Take that!!!
    10. 10. Communicate over long distances
    11. 11. How many pieces were sent during 2008? <ul><li>1 Go-Zillion </li></ul>B. 254 million <ul><li>201 Billion </li></ul>D. 5
    12. 12. Circuits & Switches Electricity too….
    13. 13. William Gilbert <ul><li>1600 AD - first person to </li></ul><ul><li>apply the term, “ electric ”. </li></ul>
    14. 14. Otto Von Guericke Invented the “elektrisiermaschine” or the first power generator
    15. 15. Benjamin Franklin <ul><li>Famous for _______________? </li></ul>flying a kite on a stormy day What he learned from the experiment was that “electricity” can be fluid or “flow” from one point to another. A B electricity
    16. 16. wow… wow… wow…
    17. 17. Journaling Experiments Experimentation or Tinkering
    18. 18. Journal your results
    19. 19. Samuel Morse Telegraph
    20. 20. Morse Code
    21. 21. Telegraph Operator That will be a $1.09 please
    22. 22. http://www.youtube.com/watch?v=l882xbFywho
    23. 23. Alexander Graham Bell
    24. 25. sound waves A B over a wire
    25. 26. In what year was the first telephone call ever made? <ul><li>1 </li></ul>B. 2009 <ul><li>1872 </li></ul>D. 1701 Large pepperoni pizza, hold the anchovies please.
    26. 29. Too many lines
    27. 30. Switch operators
    28. 32. the old solution
    29. 33. You probably drive by them everyday
    30. 34. Public Switched Telephone Network (PSTN) Tandem Switch Leominster Westford KEY Signaling Voice Path Tandem Switch yada, yada, yada Central Office Switch Central Office Switch Signaling Switch
    31. 35. Communications built on fundamentals
    32. 36. A Circuit Network Signaling System 7 (SS7) Central Office Switch Central Office Switch Public Switched Telephone Network (PSTN) A B sound over electricity
    33. 37. All of what we’ve spoken about also allows you to access the World Wide Web… … but that’s for another time.
    34. 38. Thank You

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