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IOT POLY ENGINEERING 2-2 Drill October 20, 2010 1.A device that changes a message into a form that can be transmitted 2.A device that sends a signal (i.e.,

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Presentation on theme: "IOT POLY ENGINEERING 2-2 Drill October 20, 2010 1.A device that changes a message into a form that can be transmitted 2.A device that sends a signal (i.e.,"— Presentation transcript:

1 IOT POLY ENGINEERING 2-2 Drill October 20, A device that changes a message into a form that can be transmitted 2.A device that sends a signal (i.e., encoded message) 3.A device that acquires a signal (i.e., encoded message) 4.A device that changes a coded message into an understandable form Decoder Encoder Receiver Transmitter Data Match the statements with the correct term below:

2 IOT POLY ENGINEERING 2-2 Terms 1.A device that changes a message into a form that can be transmitted 2.A device that sends a signal (i.e., encoded message) 3.A device that acquires a signal (i.e., encoded message) 4.A device that changes a coded message into an understandable form Decoder Encoder Receiver Transmitter Data Match the statements with the correct term below:

3 IOT POLY ENGINEERING 2-2 Communication Knowledge Information Storage 1.Unorganized facts 2.Organized data 3.Information applied to a task 4.The sending and receiving of information Data Match the statements with the correct term below: Terms

4 IOT POLY ENGINEERING 2-2 Communication Knowledge Information Storage 1.Unorganized facts 2.Organized data 3.Information applied to a task 4.The sending and receiving of information Data Match the statements with the correct term below: Terms

5 IOT POLY ENGINEERING 2-1 ASSIGNMENT 3 AN EXAMPLE FOLLOWS (for the radio) Using what you created as a solution for ASSIGNMENT 2, now add the following: 1. Description of any non-obvious components (particularly encoder, transmitter, and decoder, as in the radio example ahead). 2. A sketch of the system components.

6 Radio: DETAILS Goal: Inform Persuade Entertain Control Manage Educate Source: Sounds and Information Encoder: Devices that convert sound and info into a modulated sine wave (rapidly changing electric current in a wire) ASSIGNMENT 3 – Example

7 IOT POLY ENGINEERING 2-2 Radio: Sine wave contains no information. We need to modulate (vary) it. Problem: ASSIGNMENT 3 – Example

8 IOT POLY ENGINEERING 2-2 Radio: 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 Encoder: Devices that convert sound and information into a modulated sine wave ASSIGNMENT 3 – Example

9 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

10 IOT POLY ENGINEERING Radio: Goal: Inform Persuade Entertain Control Manage Educate SourceEncoderTransmitter Decoder Receiver Destination ASSIGNMENT 3 – Example

11 IOT POLY ENGINEERING 2-2 – Assignment should be set up similar to our example. – Also, include a labeled diagram. ASSIGNMENT 3 – REMINDER

12 History of Communication Technology

13 –Print Graphic Communication Visual, lingual messages that include printed media –Photographic Communication Using photographs, slides, or motion pictures to communicate a message –Telecommunications Communicating over a distance –Technical Graphic Communication Specific information about a product or its parts Size and shape, how to install, adjust, operate, maintain, or assemble a device Classes of Communication Technology Descriptions

14 1.Print Graphic Communication Newspaper, poster, brochure, billboard 2.Photographic Communication Photographs, slides, motion pictures 3.Telecommunication Radio and t.v. broadcasts, computers, mobile and satellite 4.Technical Graphic Communication Engineering drawings (sketches, drafting, CAD) Classes of Communication Technology Examples

15 TelephoneHeadphones BookComputer VideotapeRemote Control DVDPainting MagazineCamera PhotographComic Strip NewspaperBillboard 3 1 2, ,2 1.Print Graphic Communication 2.Photographic Communication 3.Telecommunications 4.Technical Graphic Communication Matching Classes

16 –Major Processes: Relief –A modeled work that is raised (or lowered) from a flat background. –Cuneiform by the Sumerians ~6000 years ago. Print Graphic Communication Communication Technology Low Relief High ReliefCuneiform

17 –Major Processes: Relief –A modeled work that is raised (or lowered) from a flat background. –Cuneiform by the Sumerians ~6000 years ago. –Wood block printing ~200 C.E. –Movable type printing ~1040 C.E. (Gutenberg ~1450) –Rotary printing press ~1843 Print Graphic Communication Communication Technology

18 –Major Processes: Relief Print Graphic Communication Communication Technology By 593 A.D., the first printing press was invented in China, and the first printed newspaper was available in Beijing in 700 A.D. It was a woodblock printing. And the Diamond Sutra, the earliest known complete woodblock printed book with illustrations was printed in China in 868 A.D. And Chinese printer Bi Sheng invented movable type in 1041 A.D. in China.

19 Print Graphic Communication Intaglio (in-tal-yo) 1. Depressions cut into printing plate 2. The plate is covered in ink3. Excess ink is removed from surface 4. Paper placed on plate and compressed 5. Paper is removed and ink has been transferred –Major Processes: Intaglio Communication Technology

20 Print Graphic Communication –Major Processes: Lithography (offset printing) ~1796 –The source and destination are not on raised surfaces –Grease and water do not readily mix –A chemical process –Most modern books and newspapers Communication Technology

21 Print Graphic Communication Screen Printing (~1000 C.E., China; 1907 England) –Mainly billboards, package labels, fabric designs –Uses a woven mesh (a screen) to support an ink blocking stencil. –The stencil forms open areas of mesh that transfer ink as a sharp-edged image onto a substrate. –A roller or squeegee is moved across the screen stencil forcing or pumping ink past the threads of the woven mesh in the open areas. Electrostatic (1938 / 1960s) –Photocopier, Laser Printer –Opposite charges attract Ink Jet (1980s) –Use a series of nozzles to spray ink directly on paper Communication Technology

22 Photographic Communication –The process of using photographs to communicate a message –Photography – capturing light on a light-sensitive material such as film or electronic sensor –As a usable process, 1820s –Includes photographs, slides, and motion pictures Communication Technology

23 Telecommunications Telecommunication –Communicating over a distance Tele – Greek, “far off” Communicare – Latin, “to share” –Rely on the principles of electricity and magnetism –2 types: Hardwired systems (telephone, cable, fiber-optic) Broadcast systems (radio and t.v., mobile phones) –Point-to-point: One transmitter and one receiver –Broadcast: One powerful transmitter to numerous receivers Communication Technology

24 Telecommunications –Smoke signals and drums –Chains of beacons (Middle Ages) Navigation signals Enemy troops approaching –Homing pigeons Carrier pigeons used as early as 1150 in Baghdad Olympic victors, Greece; Stock options, Europe Communication Technology

25 –Smoke signals and drums –Chains of beacons (Middle Ages) Navigation signals Enemy troops approaching –Homing pigeons Carrier pigeons used as early as 1150 in Baghdad Olympic victors, Greece; Stock options, Europe –Optical telegraph (semaphore, 1792, France) Towers with pivoting shutters Information encoded by the position of the mechanical elements Telecommunications Communication Technology

26 Telecommunications –Telegraph (mid 1830s) First instrument used to send messages by means of wires and electric current A device interrupts the flow of a current through a wire Uses shorter and longer bursts of current to represent letters Device at receiving end converted electrical signal into clicks Operator/mechanical printer converted clicks into words Telegram – wires over land Cable – wires under water –Telephone (1876 – Bell and Gray) Greek: tele – far, phone – sound Communication Technology

27 Telecommunications –Broadcast Radio (1893 – Tesla, 1901 – Marconi) Television (1925) –Greek: tele – far, Latin: visio – seeing –4 main parts (cathode ray tube) –Electron gun fires 3 beams –Steering coils move electron beam across screen –Phosphorus screen has over 200,000 pixels –Glass tube holds it all together –Signals are broadcasted like radio signals Communication Technology

28 –Computers –Internet –Cellular –Local Area Networks –Satellite Communication Telecommunications Communication Technology

29 Technical Graphic Communication Communication Technology –Engineering Drawing / Technical Illustration Communicates specific information –Size and shape –How parts are assembled –How to install, operate, adjust, maintain a device Hand methods –Sketching –Drafting Computer methods –CAD (AutoCAD, Sketchup, Inventor, ProEngineer, etc.)

30 –Create a PowerPoint presentation that documents the history of the development of the television, internet, and GPS. A few tips for making good presentations follow. Include pictures, references, and put everything into your own words! This assignment can be e- mailed to the course facilitator. If you cannot get access to Microsoft PowerPoint (and you can at school at least), download Open Office at Telecommunications ASSIGNMENT 4


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