Into which column does each of the technologies below go? Telephone – a human speaks in one side, a human hears it on the other. T.V. Remote – a human pushes a button, a signal is send to the television. Alarm Clock – communicates the time (with a sound) to a human. Thermostat – measures the temperature and turns the furnace on or off.

IOT POLY ENGINEERING ASSIGNMENT 1 - examples AutoCADGPS T.V. Text Msg. Video Game Controller Car Alarm Traffic Light Remote Car Locking Motion Sensor Light NOTE: Many technologies fit into multiple columns depending on how you look at it.

IOT POLY ENGINEERING 2-1 INPUTS PROCESSESOUTPUTS GOALS FEEDBACK Control Communication Technology

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

IOT POLY ENGINEERING 2-1 Communication Technology Transmitted Communication Input SOURCE Encoder Transmitter Receiver Decoder Storage Retrieval Process Received Communication Output DESTINATION TECHNOLOGY Inform Persuade Entertain Control Manage Educate

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

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

IOT POLY ENGINEERING 2-4 –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 DEFINITIONS:

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

IOT POLY ENGINEERING 2-4 –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) –Intaglio (in-tal-yo) ~1430 –Rotary printing press ~1843 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 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 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. Low Relief High Relief Communication Technology Cuneiform

IOT POLY ENGINEERING 2-4 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 Print Graphic Communication Communication Technology

IOT POLY ENGINEERING 2-4 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 Telecommunications Communication Technology

IOT POLY ENGINEERING 2-4 –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 Telecommunications Communication Technology

IOT POLY ENGINEERING 2-4 –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 Telecommunications Communication Technology

IOT POLY ENGINEERING 2-10 Reference Planes: –Frontal Reference Plane »Front View –Horizontal Reference Plane »Top View –Profile Reference Plane »Side View MULTI-VIEW TYPE 2: MULTI-VIEW Which Reference Plane? FRP Which Reference Plane? PRP Which View? TOP

IOT POLY ENGINEERING 2-10 So far, our standard 6 views are all visible using the three regular planes of projection –Frontal Reference Plane –Horizontal Reference Plane –Profile Reference Plane Those views are drawn TRUE SIZE However, inclines (slants) are not shown as true size in standard views. AUXILIARY VIEWS TYPE 2: MULTI-VIEW

IOT POLY ENGINEERING 2-10 Sectional Views –Different materials have different sectional views SECTIONAL VIEWS TYPE 2: MULTI-VIEW

IOT POLY ENGINEERING 2-11 Turn in your 3-view assignment (include NAME) Match the type of Technical Graphics below with its type: Isometric Section Standard View Development Perspective Oblique Cut-away Pictorial Communication Technology DRILL October 13, 2008 A B C D EF G E B C F G D A

IOT POLY ENGINEERING 2-11 Standard Views Sectional Views Auxiliary Views Developments Working Drawings MULTI-VIEW DRAWINGS Technical Graphic Communication [REVIEW]

IOT POLY ENGINEERING 2-11 Show a likeness of an object as viewed by the eye Isometric Perspective as it is perceived by the eye. Oblique One face is true form Exploded Assembly Cutaway Pictorial Technical Graphic Communication PICTORIAL DRAWINGS [REVIEW]