Human being is a social animal who loves to interact and communicate with others. In olden time, electronic means were not available and verbal communication, courier services and letters were the only alternatives available. The news use to take several days, even weeks and months before arriving to the target destination. These mediums were worthless in case any emergency. Slowly and gradually mankind began to develop new methods for communicating. Telegraph and telephone services can be said as the revolution of the twenty first century. Of course, phone and telegraph were remarkable inventions but they helped society as a whole […]