The most common way of communication is by use of mouth (language). There is nobody who really knows how humans began communication, but many scholars like to think that, a 150,000 years ago, communication through language was inaugurated.

Telecommunicatoins are ways to communicate across long distance by multiple types of equipment. Some of the earlier ways of telecommunication was to use smoke, flags, and lamps. Nowdays you can transmit messages through a wire (telegraphy). The phone and internet are the new fad. Through the internet you can send electronic mail thousands of miles with the click of a mouse. You can talk to people on the other side of the world through instant messages provided by selected online services. Other examples of telecommunication are as follows: broadcasting by radio, television, websites, and cellular phones.