Tnpsc Group 4 Geography Notes for all Competitive exams ( Communication ) ( 10th SSG )

COMMUNICATION :-

• 'Communication' derive from Latin Communicare, meaning to Share
• Communication are Two Type namely 1. Personel Communication 2. Mass Communication
• Personel Communication are 1. Letters 2. Telephone, 3. Telegram 4. Fax 5. Email 6.Internet
  7. Postel Services 8. Mobile Phone
• Mass Communication are 1. Radio 2. Television 3. Cinema 4. Satellite 5. News Paper 6.Books 7. Magazine 8.Public Meeting 9.Seminar 10. Conference

TELEPHONE :-

• Telephone is a form of Oral Communication
• Telephone Was Invented Alexander Graham Bell (10tht March 1876 )
• STD – Subscriber Trunk Dialing
• ISD - International Subscriber Dialing
• SMS – Short Message Service

TELEGRAM :-

• Telegram is form of Written Communication, message send quickly to distance place
• Telegram was Invented Samuel Finley Breeaw Morse (1837)

FAX :-

• Fax was Invented Alexander Bain (1843)
• Fax Means Facsimile

E-MAIL :-

• E- Mail was invented Shiva Ayyadurai ( 1979 )
• E-Mail Copyrighted 1982
• E-Mail means Electronic Mail

INTERNET :-

• Internet (WWW) was Invented by Tim Berners-Lee (T.B.Lee) (6^th August 1991)
• WWW – World Wide Web

POSTEL SERVICE :-

• Indian Postal Service was introduced 1837
• Indian Postal Service is the Largest Postal Service in the World (1,55,618 Post Offices)
• People send Parcel and Mail
• Mail has Classified 1.First Class Mail 2. Second Class Mail
• First Class Mail are 1. Post Cards 2. Inland Letters 3.Envelopes
• Second Class Mail are 1. Book packets 2. Registered News Paper 3. Periodicals
• V.P.P means Value Payable by Post

RADIO :-

• Radio Was Invented by Guglielmo Marconi ( 1895)
• 1909 Noble Prize for Physics (Radio Work)
• Radio works ( Radio Waves ie Electromagnetic Waves (unit Hertz Hz)
• In British India 1923, broadcasting Started by Radio Club of Bombay
• 1927 Private Indian Broadcasting Company Limted was Operate two Radio Stations
  1. Mumbai Station 2. Calcutta Station
• Government took over Broadcasting Service, Indian State Broadcasting Service (ISBS) in 1930
• Name Change in 1936 All India Radio (AIR) (Headquarter Delhi)
• Name Change in 1957 Akashvani

TELEVISION :-

• John Logie Baird was Invented Television
• Television Broadcasting started in India 1959 in Delhi
• 1972 Television Broadcast extented in Bombay and Amritsar
• 1976 Television Broadcast separted from Radio Broadcast (Doordarshan (DD)

SATELLITE COMMUNICATION :-

• INSAT – Indian National Satellite System
• IRS – Indian Remote Sensing Satellite System
• INSAT – Established 1983
• PSLV – Polar Satellite Launch Vehile
• NRSC – National Remote Sensing Centre at Hydrabad

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GKTNPSC Updated at: 10:00:00