The microphone has done a lot to help effective communication between people in two main ways, due to the two main types of microphone. Firstly there is one kind that is put onto a stage for a singer to sing into or a speaker to speak into which will enhance the volume of their voice. [...]

The development of the telephone has been very substantial over the few decades. All through the twentieth century there were developments being made in the telephone but in the 90s the biggest changes started to happen, particularly the mass instigation of the mobile telephone, also known as a cell phone. This new from of phone [...]

Only one century ago it was impossible to communicate with people in other countries, let alone on the other side of the world and the only way to do it was by letter or message that took a long time to get there as they had to be carried by hand or horse. This has [...]