communications

communications - CAVE PAINTINGS SMOKE SIGNALS 8 SCROLLS,...

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Unformatted text preview: CAVE PAINTINGS SMOKE SIGNALS 8 SCROLLS, PAPER, PENCIL, PEN 8 PRINTING PRESSES 8 WRITTEN NEWSMEDIA 8 SEMAPHORE 8 TELEGRAPH & TELEPHONE 8 TAPE PLAYER & PHONOGRAPH 8 RADIO & CB 8 TV & VCR 8 FAX & CELLULAR 8 WORLD WIDE WEB 8 INTERNET 8 HISTORY OF COMMUNICATION CAVE PAINTINGS 8 Oldest known samples Oldest 818000-15000 BC 8 Cave Paintings 8Discoveries 8France & Spain 8Sahara region of Africa 8Done in earth colors 8Red and yellow 8Mixed with animal fat ? 8Depicted SMOKE SIGNALS animals in area SCROLLS & PAPER PENCIL AND PEN 8Dates back to prehistoric times 8Used throughout history 8American Indians 8History is unclear 8No documented proof ? 8Scrolls 8Dead Sea Scrolls (found 1947) 8Date back to 2 BC 8Beliefs and practices Jewish and early Christians 8 8Middle and dark ages SCROLLS & PAPER PENCIL AND PEN 8Paper back to the year 105 8Chinese court official Cai Lun invented it 8 8Vegetable fibers--tree bark, rags. 8Japanese - first publication (770) 8Nicolas Louis Robert Pen Greeks & Romans used for drawing lines 8Graphite 8Pure discovered in 1400’s graphite - England (1564) 8Rods 8Mixed clay & graphite- hardness 8William Monroe 8invented wooden casing PRINTING PRESSES BC - Egyptians 8Brushes from thin stemmed reed 8300 BC - Greeks 8Reed pen 86 8Ancient 8lead 8Date 84000 pencil, pen quill pen 819th century WRITTEN NEWSMEDIA 8Books date back to ancient times 8Publishing started in Europe century its first book - 1583 8Specialization 819th 8latin bible was produced century in publishing press - 1847 NEWSPAPER 8Roman Acta 8Dates 8First diurna back to 59 BC 8Advent 8Major family 8Published printing press - 1455 8High-speed BOOKS, NEWSPAPER, MAGAZINES 8Elzevir 8First with movable type 8Steam-powered press - 1814 8metal pen 815th first used - 8th century 8Chinese - wood blocks 8Koreans & Chinese - 11th century 8Experiment BC - Romans 8Invented 8Printing of printing in 15th cent. factor in early development daily newspaper 8Daily Courant 1702 8Publick 8First Occurrences newspaper in Am. colonies SEMPAPHORE 8Semaphore 8Late 18th cent. 8Optical telegraph 8Claude Chappe Visual Telegraphy 8Claude 8Could Chappe (1763-1805) Have Been Built Earlier Lacked Telescope 8 8First Stations Menilmontant Saint-Martin-du-Tertre Saint-Martin-du-Tertre (21 Miles) 8 8 8First Line Paris to Lille 8 Semaphore System 8 Wooden “T” 8 Horizontal 8 Jointed Beam (Regulator) Arms (Indicator) 8 196 Different Positions 8 Chappe Code - 92 Positions 8 Diplomatic Dictionary 8 92 Pages - First Signal 8 92 Words/Page - 2nd Signal 8 Second Dictionary - Phrases TELEGRAPH 8Telegraph (1792) 8From Greek tele - far, grahpeic - to write 8 8Hans Christian Oersted 8Used electric current (1819) 8Samuel Morse 8Sounding key (1856) 8Western Union (1856) Semaphore System 8Slowed Development Telegraph 8No New Technology 8Calais To Paris 833 Posts, 58 Leagues, 3 Minutes 8Toulon To Paris 810 Posts, 200 Leagues, 20 Minutes 8Used Extensively In WW I 8Still Used - Aircraft Carriers First Electric Telegraphs 8Euston & Camden In London(1837) 840 Years After Chappe 81 Mile Long 8William F. Cooke 8Charles Wheatstone 85 Needles & Circuits 6 Wires 8 Printing Devices Morse System 8Samuel F. B. Morse (1791-1872) 8Painter Turned Physicist Modern day who ? 8 8 Baltimore To Washington (1845) 8 Adopted Throughout Europe (1846) 8 International Communication (1854) Morse System 8Simplicity 8Simple Mechanical Device Identical Movements 8 8Single Code With 2 Elements Short & Long Signals 8Combinations Of 4 Signals 8 Morse System 8 Manual Transmitter 8 Right 8 Flexible Blade (First Model) 8 Left 8 Jointed Lever Type 8 Reversing Spring 8Every Letter Of Alphabet 812 + 22 + 32 + 4 2 = 2 + 4 + 9 + 16 = 31 16 8Similarities & Symmetry Telegraph Lines Telegraph Lines 8First 8Success Of Telegraph 8Transmitting Devices Lines 8Iron Wires - Poor Results 8Copper Wires - Tempted Thieves Underground Covered w/ Cotton & Pitch 8Receiving Devices 8 8Batteries 8 8Transmission Lines 8Insulating Wires In Suspension Telegraph Lines 8 Ring Insulator (1845) 8 Insulator With Tension Devices (1845) 8 Porcelein Insulator (1860) Telegraph Significance 8New Occupations Telegraph Significance 8Produced Numerous Inventions 8Lightning Rods 8Cummutators 8Relays 8Sound Devices 8Galvanometers 8Measuring Instruments 8Telephone TELEPHONE 8Robert Hooke 8Physicists Electrical Engineering 8 8First High Tech Occupation 8Machinery & Electrical Industry 8Batteries 8Magnetoelectric Motor 8Electric Generators Telephone 81876 Telephone 8Alexander Graham Bell 8Alexander Graham Bell Awarded Patent Based On Hermann Helmholtz’s Work 8 8 8Elisha “Tis not impossible to hear 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” Gray - Superior Design 8Teacher Of Deaf 8Used No External Power Source Still Can Be Used For Short Distances 8 8Transmitter & Receiver Identical 8Electromagnetic Microphone 8Over-land cables Telephone 8Trans atlantic cable (1956) 8Fiber optics 8Satellites TAPE PLAYER 8Valdemar Paulsen in 1898 8Modern form 8Invented 8Radio 8start in Germany in 1930’s programs in late 1940’s 8Reel to Reel 8Cassettes PHONOGRAPH 8Invented by Edison (1877) 8Talking machine 8Cylinders 8Discs used (1887) 8Instead of cylinders 8Perfected by Emile Berliner C.B. RADIO 8Originated in 1940’s 8Citizens Radio Service 8Hobby use in 1975 8Channels RADIO & C.B. 8Invented by Marconi (1901) 8First transatlantic signal 8First radio broadcast (1906) 8Reginald Fessenden 8David Saroff 8Future (1916) head of RCA & NBC TV 8Iconoscope invented in 1923 8Vladimir Zworykin 8Photoelectric cells 8Cathode-ray tube 8HDTV 8F.C.C VCR FAX 8Invented in post-war Japan 8VHS 8Beta 88 8Invented by Alexander Bain (1843) 8Furthered along by John VL Hogin 8Early millimeter 8DAT 1900s 8Early 1950’s - time compression 8Japan 1970’s - use increased 81980’s- widespread use CELLULAR 8Introduced in 1980’s 8Cells- geographic areas 8Frequency 8Digital service WORLD WIDE WEB 8Developed in 1989 8European Lab. for Particle Physics CERN, Geneva Timothy Berners -Lee Berners-Lee 8 8 8MIT WWW Consortium 8 8Hyperlinks INTERNET 8Developed in 1973 Universities & Govt . Res. Labs Govt. Res. 8 8Early Beginnings 8Manhattan Project U. of Chicago, Berkely 8Los Alamos, Oak Ridge 8 ...
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