Question

means of communication and means of mass communication​

Answer 1

Explanation:

Mass communication is a process in which a person, group of people, or an organization sends a message through a channel of communication to a large group of anonymous and heterogeneous people and organizations. ... Channels of communication include broadcast television, radio, social media, and print.

Answer 2

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On the basis of external appearance, the means of communication may be exemplified as telegraph, radio, broadcasting, television, telephone and cordless, radar, sonar, E-mail, Fax, telemetering, mobile phone etc. These transfer electrical signal from one place to another.

On the basis of propagation, the means of communication are :-

• Cable communication
• Ground wave communication
• Sky wave communication
• Satellite communication

On the basis of wave form used for communication it have two classes :-

• Analogue communication
• Digital communication

In analogue communication signals vary continuously with time. In digital communication the signal change into steps.