1. IOT POLY ENGINEERING 2-2 DRILL October 11, 2010 LIST THE FOUR CATEGORIES OF COMMUNICATION (Example Human to Human) AND GIVE AN EXAMPLE of EACH

2. Bookwork Problems Pass in assignment on the soda problem assigned last Wednesday Define the key terms on page 372. Answer the 15 “Test your Knowledge” Questions on page 372. This is classwork that will turned in. This is a silent, individual assignment. Talking will result in serving after school detention.

3. 1)Estimate how much soda the American population drinks in a year 2)If a can of Coca-Cola is 150 calories and there are 3,500 calories in a pound of body mass, what is the average weight gain of an American in a calendar year due to drinking soda?

4. Soda Problem 1 I would estimate on average Americans drink one cans of coke everyday. Some drink more than two, some drink none but a reasonable average is 1 can/day 20 billion gallons of soda every year Actual answer is 15 billion

5. Soda Problem 2 If the average American drinks 1 can of soda per day 16 lbs per year

6. IOT POLY ENGINEERING 2-1 Types of Communication Technologies Printed Graphic Communication:Photographic Communication: Telecommunication Technical Graphic Communication:

7. IOT POLY ENGINEERING 2-1 – Goals Inform Persuade Entertain Control Manage Educate – Inputs Source of Communication – Processes (in this order) Encoder Transmitter Receiver Decoder Storage Retrieval – Outputs Message to the destination – Feedback and Control Reversing the communication line Communication Technology Not always

8. IOT POLY ENGINEERING 2-1 ASSIGNMENT 2 Example Follows LETTER THIS ASSIGNMENT Radio, T.V., Cell Phone, Internet, GPS, Remote Control For the 6 above technologies analyze the components (the goal, source, encoder, transmitter, receiver, decoder, storage, retrieval, and destination). You will need to research the devices in order to complete this assignment. Provide references.

9. IOT POLY ENGINEERING 2-2 Radio: Goal: Inform Persuade Entertain Control Manage Educate Source: Sounds and Information Encoder: Devices convert sound and info into modulated sine waves Transmitter: Antennas radiate the radio waves into air (medium) Receiver: Antennas capture the radio waves from air Decoder: Devices convert radio waves back into sounds and data [Storage: Recording devices store sounds and data for playback] [Retrieval: Stored data can be accessed and played] Destination: Consumers’ ears and eyes ASSIGNMENT 2 – Example

10. IOT POLY ENGINEERING 2-1 Encoder – A device that changes a message into a form that can be transmitted Transmitter – A device that sends a signal (i.e., encoded message) Receiver – A device that acquires a signal (i.e., encoded message) Decoder – A device that changes a coded message into an understandable form Communication Technology

11. IOT POLY ENGINEERING 2-1 Communication Technology Tin Can Telephone Encoder-1 st tin can – Sound energy is converted to mechanical energy Transmitter – wire between strings – Mechanical energy is transferred to second can Receiver – 2 nd tin can – Mechanical energy of wire is converted to vibrations of tin can. Decoder – 2 nd tin can – Vibrations of second tin is converted into sound energy.

12. IOT POLY ENGINEERING 2-1 Communication Technology Landline Telephones Encoder-Microphone in first handset Transmitter – Copper wires to central location and then to destination Receiver – 2 nd telephone Decoder – Speaker in second handset

13. IOT POLY ENGINEERING 2-1 Communication Technology Cellular Telephones Encoder-Microphone in first handset Transmitter – 1 st telephone sends radio signal to cellular tower. Tower sends radio signal to 2 nd telephone Receiver – 2 nd cell phone Decoder – Speaker in second handset

14. IOT POLY ENGINEERING 2-1 Communication Technology Transmission of Radio Signal Sine wave contains no information. We need to modulate (vary) it. Problem:

15. IOT POLY ENGINEERING 2-1 Communication Technology Transmission of Radio Signal Voice Patterns

16. IOT POLY ENGINEERING 2-2 Pulse Modulation: turn the voltage (sine wave) on/off (Morse Code) Amplitude Modulation: vary the amplitude (peak-to-peak) voltage Frequency Modulation: vary the frequency (speed) PM AM FM

17. IOT POLY ENGINEERING 2-2 Digital vs Analog AnalogDigital

18. IOT POLY ENGINEERING 2-2 Digital vs Analog Advantages of digital – Store large amounts of information – Retrieve large amounts of information Disadvantages of digital – Lose information – Can only store using binary numbers On/Off

19. IOT POLY ENGINEERING 2-2 Morse Code Communication

20. IOT POLY ENGINEERING 2-2 Listening to Aliens We are looking at aliens by examining electromagnetic spectrum Scientists use radio telescopes to analyze if any messages seem to be unnatural

21. IOT POLY ENGINEERING 2-2 Talking to Aliens In 1974 Scientists sent a deliberate message – 25,000 light years away – 1679 bits of information 23 columns 78 rows – Frequency of 2380 MHz – 10 bits/second

22. IOT POLY ENGINEERING 2-2 The Message 0000001010101000000000000101000001010000000100100010001000100101100101010 1010101010100100100000000000000000000000000000000000001100000000000000000 00110100000000000000000001101000000000000000000101010000000000000000001111 10000000000000000000000000000000011000011100011000011000100000000000001100 1000011010001100011000011010111110111110111110111110000000000000000000000000 01000000000000000001000000000000000000000000000010000000000000000011111100 00000000000111110000000000000000000000011000011000011100011000100000001000 0000001000011010000110001110011010111110111110111110111110000000000000000000 00000001000000110000000001000000000001100000000000000010000011000000000011 11110000011000000111110000000000110000000000000100000000100000000100000100 00001100000001000000011000011000000100000000001100010000110000000000000001 10011000000000000011000100001100000000011000011000000100000001000000100000 0001000001000000011000000001000100000000110000000010001000000000100000001 0000010000000100000001000000010000000000001100000000011000000001100000000 01000111010110000000000010000000100000000000000100000111110000000000001000 010111010010110110000001001110010011111110111000011100000110111000000000101 00000111011001000000101000001111110010000001010000011000000100000110110000 0000000000000000000000000000000111000001000000000000001110101000101010101 01001110000000001010101000000000000000010100000000000000111110000000000000 000111111111000000000000111000000011100000000011000000000001100000001101000 00000010110000011001100000001100110000100010100000101000100001000100100010 0100010000000010001010001000000000000100001000010000000000001000000000100 000000000000100101000000000001111001111101001111000

23. IOT POLY ENGINEERING 2-2 Message to Aliens Numbers from 1 to 10 Atomic Numbers for Hydrogen, Carbon, Nitrogen, Oxygen, and Phosphorous DNA Bases and Sugars DNA Structure Picture of man and population of earth Solar System Arecibo Telescope