Possibly the "talking drums" which have been used by African tribes for centuries.
Now days world's most of work depend on communication system because Inernet is main part of cmmunication system also mobile communication system is like daily routine of d people
Jagdish Bose
Morse
Communication in the twenty-first century includes email, mail, telephone, cellular phone, and computer type communications. This century is known for its instant access to communication with most of the world.
The communication after World War 2 came to one thing. Television became indispensable to the political system as a means of advertising candidates.
it becomes communication system through networking......
communication system
global village is a metaphor for the internet or world wide web i mean its a source of mass communication through internet
Communication in the twenty-first century includes email, mail, telephone, cellular phone, and computer type communications. This century is known for its instant access to communication with most of the world.
what was the first communication devise what was the first communication devise
The painter turned inventor who developed the first reliable system for instant communication across long distances was Samuel Finley Breese Morse. He also invented Morse code.
communication system are concerned with the transfer of data and information from one location to another