Mass media is a technology which makes communication possible between sender and receiver of any signal. 

Functions of mass media are:-

1.All pervasive:-impacts every aspect of our lives.

2.Inclusive:- includes all aspects of society. 

For example, the role of media in depicting various parts of India as parts of the whole. 

3.Socialiser:-tells us about the acceptable modes of behaviour and the unacceptable modes of behaviour. 

For example, the role of media in encouraging people to give polio vaccines to children. 

4.Influencer:-influences behavior.

For example, the role of media in encouraging people not to drink and drive. 

5.Aspiration driver:-for example, the role of media in encouraging consumption patterns such as the use of microwaves or modular kitchens. 

6.Persuader/seller/Nagger:-

For example, advertising and how it acts on the psyche, especially minds of youth. 

7.Awareness creator/Informer:- the role of media in propagating spread of information-be it news or current affairs or government policies. 

8.Education:-The role of media in spreading education.