Communication means Exchange of information between two individuals through symbols, signs, sound, behavior or different voices is called communication
Time line of communication
In past about 2000 years ago people communicates with each other through different signs, voices, arrows, colours.
100AD paper is invented so people draw signs on it and communicate through this.
1000AD pen is invented for writing.
1400AD printing press is invented.
1800BC people used smoke signals.
1609 first news paper in Europe.
1876 Alexander Graham Bell invents the telephone.
1877 Thomas Edison invents phonograph the first machine that could record and reproduce sound.
1897 the first radio frequencies and transmission started publically by Nikola Tesla.
1927 first television was invented for live streaming.
1973 Martin Coper invented first official call phone the was called Motorola Dyna-tac.
1983 internet for global networking.
1991 GSM is put into operation for mobiles.
1997 social networks created.
2001 smart phone invented.
2005 you tube is launched video streaming site.
2010 Instagram is launched by I pad.
