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220 BCE
Carrier pigeon
It is important because you can comunícate with mensajes quickly with other persons.The first historical manifestation of the carrier pigeon is a painting of the hypogea of Medinet-Abú, which represents a release of pigeons to announce the advent of Ramses III. This indicates that the pharaohs used them to communicate with all the cities of the Empire. In addition, the Egyptian sailors advanced the news of arrival to port using the homing. -
150 BCE
Smoke signals
The reason is that the smoke clouds could be seen from several kilometers away and it was possible that the enemy could decipher its meaning. For that reason, they were used exclusively to convey precise and urgent ideas, such as victory or defeat in a battle or to warn that an enemy was waiting. -
Telegraph
The telegraph that was a means of remote communication which transmitted messages with a code called Morse code. The first message, started a new form of communication networks. The telegraph was one of the best events at that time although it was subjected to many changes that unlike the original offered a better service. -
Telephone
Because is a telecommunication device designed to transmit acoustic signals remotely by means of electrical signals.
Meucci built a telephone to connect his office with his bedroom , because his wife was immobilized by rheumatism. However, Meucci lacked enough money to patent his invention, although he patented other inventions that he believed were more profitable, such as an economic filter for water purification and the use of paraffin in the manufacture of candles. -
The television
Television is one of the most recent means of mass communication, the transmission of images and sounds electronically.
They allow an event to be seen in the most remote place in the world at the same time it occurs.
In 1900 the word "television" was born, this term was used for the first time by the Russian scientist Constantin Perskyi in a document read in the first International Congress of Electricity -
The radio
The radio describes the important steps in the evolution of radio communication and the means of communication called radio from the discovery of radio waves to the present.
The radio has been, without a doubt, one of the most important inventions of the human being. For the first time in history, a large part of the population could be informed in real time. Currently, a radio device almost does not take up space thanks to electronic advances, but this has not always been the case. -
The movile phone
The mobile phone or cell phone is an indispensable device at present; however, its popularization has been a very recent phenomenon. At first the mobile phone could only be used in vehicles because of its size, later reduced to a portable unit, and finally to the pocket size that we use today. The police force of Victoria, Australia, was the first to use duplex wireless communication in cars, putting an end to the practice of giving police reports in public telephone booths. -
Social network
In 1971 the first sending of an email was made through two computers that were side by side. It was done by Ray Tomlinson.
In 1978 BBS (Bulletin Board System) is exchanged through telephone lines with other users.
In 1997 when Instant Messenger was launched for the first time. An instant messaging program created by Microsoft Windows with which users could find the most basic chat services and contact list. -
The computers
The computer, is one of those inventions that do not have a specific creator, but many people have been contributing their bit to operate what is now known as a computer, computer or PC.
The company IBM would enter the scene with its machine called IBM 701 EDPM to be a key point in the history of the computer,eveloping new systems and servers for public and private use. IBM brought the first real signs of competition in the computer world, which helped a better spread of computers in the market.
