In earlier time, the way people communicate was very different from now. this is because at that time, people still did not have advanced technology just like right now. the telecommunication at that time including visual signals such as beacons, smoke signals, semaphore telegraph, signal flags and optical holographs. Besides that, at earlier time, people also used audio messages such as coded drumbeats, lung-blown horns, or sent by loud whistles.
The revolution of wireless telecommunication began in the first decade of 20th century. There are many inventors who had changed the world. This is including Charles Wheatstone and Samuel Morse who invented the telegraph, Alexander Graham Bell who invented the telephone, Edwin Armstrong and Lee De Forest who invented the radio, John Logie Baird and Philo Farnsworth who invented the television.
These are some of the common technology that we can see in our daily life..
So, what do you think it is going to be in the future?:)
