Every organism in the world needs to impart or receive information continuously with others in order to survive. Hence, it is worthwhile to look at the major events in history that prompted developments in communication. This chapter discusses the major milestones in events that prompted the development. The aim of this chapter is to introduce concepts of communication such as :
- Concepts of communication
- Mode of communication
- Need for modulation
- Detection and production of amplitude modulation
We have provided here a concise CBSE class 12 physics revision notes for chapter 15 communication systems to help students score better marks in the exam.