Key Points

Communication is the process of sharing and transmitting feelings, ideas, thoughts, and information through various mediums. It aims to create a common understanding between the sender and the receiver.

The term communication originates from the Latin word 'communis', which means 'common'. This emphasizes the goal of establishing a shared understanding.

One-way communication is when a receiver gets information without an immediate response, like watching TV. Two-way communication involves an exchange of ideas where feedback is possible, such as a phone conversation.

Communication can be classified by levels: Intra-personal (communicating with oneself), Inter-personal (between two or more people face-to-face), Group (within a small group), and Mass (to a large, anonymous audience).

Intra-organisational communication occurs within a single organization. Inter-organisational communication is the exchange of information between different organizations to facilitate cooperation.

Verbal communication uses spoken words, sounds, and tone of voice. Non-verbal communication involves gestures, facial expressions, posture, and symbols.

The communication process can be understood through the SMCRE model which consists of five elements: Source, Message, Channel, Receiver, and Effect (feedback).

Communication is more effective and retention is higher when more human senses are involved. Learning through seeing, hearing, and doing is more permanent than just reading or listening.

Media refers to the means or channels used for communication to disseminate and share information. Mass media uses modern technology to reach large, heterogeneous audiences.

Media can be classified as traditional and modern. Traditional media includes folk arts like puppetry and folk theatre, while modern media includes radio, television, internet, and mobile phones.

Media performs several key functions, including providing information, persuasion, entertainment, education, interpretation of complex topics, and transmission of values.

Communication technology refers to various technologies developed and used to handle information and aid in communication. It includes hardware, software, and organizational structures for information exchange.

Communication technologies fall into two main groups: cable-based (e.g., landline telephone) and wireless (e.g., radio, satellite, Bluetooth).

Radio and television are two key technologies that revolutionized communication. Radio has a universal reach, while TV, introduced in India in 1959, is a powerful medium for education and rural development.

Modern communication technologies include micro-computers, electronic mail (E-mail), interactive video, and teleconferencing, which allows meetings between geographically distant people.

Bluetooth is a short-range wireless technology that enables data and voice transmission between mobile devices like phones and computers without the need for cables.