communications - HISTORY OF COMMUNICATION $ $ $ $ $ $ $ $ $...

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Unformatted text preview: HISTORY OF COMMUNICATION $ $ $ $ $ $ $ $ $ $ $ $ $ CAVE PAINTINGS SMOKE SIGNALS SCROLLS, PAPER, PENCIL, PEN PRINTING PRESSES WRITTEN NEWSMEDIA SEMAPHORE TELEGRAPH & TELEPHONE TAPE PLAYER & PHONOGRAPH RADIO & CB TV & VCR FAX & CELLULAR WORLD WIDE WEB INTERNET CAVE PAINTINGS $ Oldest known samples Oldest $ 18000-15000 BC Cave Paintings $ Discoveries $ France & Spain $ Sahara region of Africa $ Done $ Red in earth colors and yellow $ Mixed with animal fat ? $ Depicted animals in area SMOKE SIGNALS $ Dates back to prehistoric times $ Used throughout history $ American Indians $ History is unclear $ No documented proof ? SCROLLS & PAPER PENCIL AND PEN $ Scrolls $ Dead Sea Scrolls (found 1947) $ Date back to 2 BC $ Beliefs and practices $ Jewish $ Middle Middle and early Christians and dark ages SCROLLS & PAPER PENCIL AND PEN $ Paper $ Date back to the year 105 $ Chinese court official $ Cai Lun invented it $ Vegetable fibers--tree bark, rags. $ Japanese - first publication (770) Japanese $ Nicolas Louis Robert pencil, pen $ Ancient $ lead Greeks & Romans used for drawing lines $ Graphite $ Pure discovered in 1400’s graphite - England (1564) $ Rods $ Mixed $ William clay & graphite- hardness Monroe $ invented wooden casing Pen $ 4000 BC - Egyptians $ Brushes $ 300 BC - Greeks $ Reed $6 from thin stemmed reed pen BC - Romans BC $ Invented $ 19th quill pen century $ metal pen PRINTING PRESSES $ Printing first used - 8th century $ Chinese - wood blocks $ Koreans & Chinese - 11th century Koreans $ Experiment $ First with movable type printing press - 1455 $ latin bible was produced $ Steam-powered press - 1814 $ High-speed press - 1847 WRITTEN NEWSMEDIA BOOKS, NEWSPAPER, MAGAZINES $ Books date back to ancient times $ Publishing started in Europe $ 15th century $ Elzevir family $ Published Published its first book - 1583 $ Specialization $ 19th century in publishing NEWSPAPER $ Roman $ Dates Acta diurna back to 59 BC $ Advent $ Major $ First of printing in 15th cent. factor in early development daily newspaper $ Daily Courant 1702 $ Publick $ First Occurrences newspaper in Am. colonies SEMPAPHORE $ Semaphore $ Late 18th cent. $ Optical telegraph $ Claude Chappe Visual Telegraphy $ Claude $ Could Chappe (1763-1805) Have Been Built Earlier $ Lacked $ First Telescope Stations $ Menilmontant $ Saint-Martin-du-Tertre $ First Line $ Paris to Lille (21 Miles) Semaphore System $ Wooden “T” Wooden $ Horizontal Beam (Regulator) $ Jointed Arms (Indicator) 196 Different Positions $ Chappe Code - 92 Positions $ $ Diplomatic Dictionary 92 Pages - First Signal $ 92 Words/Page - 2nd Signal $ $ Second Dictionary - Phrases Semaphore System $ Slowed Development Telegraph $ No New Technology $ Calais To Paris $ 33 Posts, 58 Leagues, 3 Minutes $ Toulon $ 10 To Paris Posts, 200 Leagues, 20 Minutes $ Used Extensively In WW I $ Still Used - Aircraft Carriers TELEGRAPH $ Telegraph $ From $ tele $ Hans (1792) Greek - far, grahpeic - to write Christian Oersted $ Used Used electric current (1819) $ Samuel Morse $ Sounding key (1856) $ Western Union (1856) First Electric Telegraphs $ Euston & Camden In London(1837) $ 40 Years After Chappe $ 1 Mile Long $ William F. Cooke $ Charles Wheatstone $ 5 Needles & Circuits Needles $6 Wires Printing Devices Morse System $ Samuel F. B. Morse (1791-1872) $ Painter Turned Physicist $ Modern day who ? Baltimore To Washington (1845) $ Adopted Throughout Europe (1846) $ International Communication (1854) $ Morse System $ Simplicity $ Simple Mechanical Device $ Identical $ Single Movements Code With 2 Elements $ Short & Long Signals $ Combinations Of 4 Signals $Every Letter Of Alphabet $12 + 22 + 32 + 42 = 2 + 4 + 9 + 16 = 31 $Similarities & Symmetry Morse System $ Manual Transmitter $ Right $ Flexible Blade (First Model) $ Left Jointed Lever Type $ Reversing Spring $ Telegraph Lines $ Success Of Telegraph $ Transmitting Devices $ Receiving Devices $ Batteries $ Transmission Lines Telegraph Lines $ First Lines $ Iron Wires - Poor Results $ Copper Wires - Tempted Thieves $ Underground $ Covered w/ Cotton & Pitch $ Insulating Wires In Suspension Telegraph Lines Ring Insulator (1845) $ Insulator With Tension Devices (1845) $ Porcelein Insulator (1860) $ Telegraph Significance $ Produced Numerous Inventions $ Lightning Rods $ Cummutators $ Relays $ Sound Devices $ Galvanometers $ Measuring Instruments $ Telephone Telegraph Significance $ New Occupations $ Physicists $ Electrical $ First Engineering High Tech Occupation $ Machinery & Electrical Industry $ Batteries $ Magnetoelectric Motor $ Electric Generators TELEPHONE $ Robert Hooke “Tis not impossible to hear Tis a whisper a furlong’s distance, it having already been done; and perhaps the nature of the thing would not make it more impossible though that furlong should be ten times multiplied” multiplied” Telephone $ 1876 $ Alexander Graham Bell $ Awarded Patent $ Based On Hermann Helmholtz’s Work $ Elisha Gray - Superior Design Telephone $ Alexander Graham Bell $ Teacher Of Deaf $ Used No External Power Source $ Still Can Be Used For Short Distances $ Transmitter & Receiver Identical $ Electromagnetic Microphone $ Over-land cables Telephone $ Trans atlantic cable (1956) $ Fiber optics $ Satellites TAPE PLAYER $ Valdemar Paulsen in 1898 $ Modern form $ Invented $ Radio $ start $ Reel in Germany in 1930’s programs in late 1940’s to Reel $ Cassettes PHONOGRAPH $ Invented by Edison (1877) $ Talking machine $ Cylinders $ Discs used (1887) $ Instead of cylinders $ Perfected by Emile Berliner RADIO & C.B. $ Invented by Marconi (1901) $ First transatlantic signal $ First radio broadcast (1906) $ Reginald $ David Fessenden Saroff (1916) $ Future head of RCA & NBC C.B. RADIO $ Originated in 1940’s $ Citizens Radio Service $ Hobby use in 1975 $ Channels TV $ Iconoscope $ Vladimir invented in 1923 Zworykin $ Photoelectric cells $ Cathode-ray tube $ HDTV $ F.C.C VCR $ Invented in post-war Japan $ VHS $ Beta $8 millimeter $ DAT FAX $ Invented by Alexander Bain (1843) $ Furthered along by John VL Hogin $ Early $ Early 1900s 1950’s - time compression $ Japan 1970’s - use increased $ 1980’s- widespread use CELLULAR $ Introduced in 1980’s $ Cells- geographic areas $ Frequency $ Digital service WORLD WIDE WEB $ Developed $ European in 1989 Lab. for Particle Physics $ CERN, Geneva $ Timothy Berners-Lee $ MIT $ WWW Consortium $ Hyperlinks INTERNET $ Developed in 1973 $ Universities $ Early Beginnings $ Manhattan $ U. & Govt. Res. Labs Project of Chicago, Berkely $ Los Alamos, Oak Ridge ...
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This note was uploaded on 11/22/2011 for the course EGN 2031 taught by Professor Staff during the Summer '08 term at University of South Florida.

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