Theory:

Narrowcast media :
Narrowcast media is an early form of media that involves aiming media messages at specific public segments.
Example:
Cable Television, Direct mail, Seminar.
Broadcast Media:
Broadcast media involves electronically and simultaneously sending information containing print messages and audio or video content to a vast group of recipients.
Example:
Films, Television, Radio.
Print Media :
Print media is a means of mass communication in printed publications, such as newspapers and magazines.
Example:
Newspapers, Magazine, Journals, Books, Posters, Reports.
Digital media
Digital media is a form of media that uses electronic devices for spreading information. This form of media can be created, viewed, modified and distributed via electronic devices. The following two are some types of digital media.
 
1. Web Media:
Web media is the textual, audio and visual forms of communication presented on the web.
Example:
Google website and Blogs.
2. Social Media:
Social media is a computer-based technology that enables sharing of ideas, thoughts, and information through virtual networks and communities.
Example:
Twitter, Facebook, Whatsapp and Instagram.