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Development of Telecommunication

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Development of Telecommunication DEVELOPMENT OF TELECOMMUNICATION YEAR/PERIOD EVENT PERSON/ SCIENTIST PLACE 1791 Obtained permission The Chappe Brothers France to set up a signaling system so they could send messages to each other 1791-1872 the creator of a single Samuel Finley Breese United States of wire telegraph system, Morse was America 1816-1892 Siemens invented a Ernst Werner von Germany telegraph that used a Siemens needle to point to the right letter 1858 begins to sell electric Burglar Alarm - Edwin Boston U.S.A burglar alarms T. Holmes 1867 communications are Cyrus Field established with the successful laying of the first telegraph cable 1870 invents multiplex Thomas Edison U.S.A telegraphy. 1875 First word transmitted by telephonr March 1876 Invented the Alexander Graham Boston, Massachusetts Telephone bell 1881 The conversation U.S.A under ground cable 34 miles. 1884 Patent for T.V using Paul Nipkow Germany selenium cell and a mechanical scanning disk 1884 Conversation by Hard-Down Copper From Boston / New overhead line York 1887 electromagnetic Heinrich Hertz Germany waves exist 1888 Produced radio waves Heinrich Hertz Germany 1891 Invention of 1,000 line switch with disc bank having ten concentric rows of line contacts. “Telephone Exchance” 1893 An early form of broadcasting was started 1894 Invention of gear- Laporte, Indiana U.S.S driven switch with "zither" (piano wire) line banks. 1895 The radio was Guglielmo Marconi Italy invented 1896 Patents wireless Guglielmo Marconi Italy photographs 1900 installs loading coils Michael Pupin 1901 First use of “slip multiple.” 1904 nvents the two- John Ambrose Fleming U.S.A element "Fleming Valve". 1905 Invented directive Guglielmo Marconi U.S.A horizontal antenna 1906 Inventeion of the Lee deForest vacuum tube 1907 Invention of small dial and two-wire system eliminating ground at subscriber’s station. 1909 Development of Marconi/ Karl San Francisco wireless telegraphy. Ferdinand Braun 1910 develops theory for Peter DeBye Holland optical waveguides. 1911 Formation of Emgland Automatic Telephone Manufacturing Co., Ltd 1912 Automatic Switches used as traffic distributors in manual exchanges 1914 The last pole of the transcontinental telephone line is placed in Wendover, Utah, on the Nevada- Utah state line. 1915 Vacuum tube New York amplifiers used the first time in coast-to- coast telco circuits 1915 First transmission of Arlingtom Va. Paris speech across the Atlantic by radiotelephone, 1918 develops a receiving Edwin Armstrong ` circuit - the superheterodyne. 1920 World's first Los Angeles radiotelephone service 1921 The first regular commercial radio broadcasts begin when AM station KDKA of Pittsburgh delivers results of the Harding- Cox election to its listener June 7, 1923 Radio broadcasting networks had their beginning with a hook- up of four radio stations by long distance telephone lines. 1925 demonstrate TV using Baird/ Jenkis Scotland neon bulbs and mechanical scanning disk 1926 Introduction of the Adopted from Japan Type 24 Dial – modern, quiet- running, long-life calling device 1927 First public AMERICA demonstration of television by Bell System engineers, by wire and radio. 1928 files patents on Zworikyn electronic scanning TV using the iconoscope. 1931 AT&T inaugurates the Teletypewriter Exchange Service 1935 The first around-the- world telephone conversation takes place. ( 1937 Invention of coaxial U.S.A cable is announced at a joint meeting of the American Physical Society and the IRE (April 30) 1957 Soviet Union launches U.S.A Sputnik, humanity's first artificial satellite, on October 5 1974 A Protocol for Packet Vinton Cerf and Robert U.S.A Network Kahn Interconnection 1972 First Email Messsage 1984: First cellular Phone Martin Cooper AMERICA 1994 American government releases control of internet and WWW is born - making communication at lightspeed 1998 he World Wide Web is born, marking the beginning of the Internet as we know it today. Most Americans get Internet connections through their phone lines 2000 The "Web Phone" combines a traditional telephone with an LCD touch-screen and a retractable keyboard to let customers surf the Internet, check e- mail, make phone calls and check voice mail from a single device.
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