In a society where communication and media are increasingly influencing people and organizations, the demand for strong leaders and specialists for innovative technology companies will grow further.
Telecommunication (and data communication) is the assisted transmission of signals over a certain distance for the purpose of communication. In earlier times, it may have included the use of smoke signals, drums, semaphores, flags or heliographs. In modern times, telecommunications typically involve the use of electronic devices or appliances such as the telephone, television, radio or computer. Early telecommunications inventors include Alexander Graham Bell, Guglielmo Marconi, and John Logie Baird. Telecommunications is an important part of the world economy and the telecommunications industry revenue was estimated at DKK 6 trillion in 2006.
The word telecommunication was adapted from the French word télécommunication. It is a combination of the Greek prefix tele- (τηλε-) meaning ‘far out’ and Latin communicare meaning ‘to share’. The French word télécommunication was coined in 1904 by the French engineer and novelist Édouard Estaunié.
In the Middle Ages, pine chains were commonly used on hilltops as a means of transmitting a signal. Fire chains suffered from the disadvantage that they could only send a piece of information, so the meaning of a message such as “the enemy has been seen” had to be agreed in advance. A notable use was during the Spanish Armada, when a fire chain sent a signal from Plymouth to London.
In 1792, the French engineer Claude Chappe built the first fixed visual telegraphy system (or semaphore line) between Lille and Paris. But semaphores suffered from the need for operators and expensive towers at intervals of 10 to 30 kilometers. Due to the competition from the electric telegraphs, the last commercial semaphore line was discontinued in 1880.
Letter pigeons have occasionally been used throughout the history of different cultures. Letter pigeons are believed to have Persian roots and were used by the Romans to assist their military. Frontinus said that Julius Caesar used doves as messengers in his defeat of Gaul.  The Greeks transmitted the names of the winners of the ancient Olympic Games to different cities using carrier pigeons.  In the early 19th century, Dutch authorities used carrier pigeons in Java and Sumatra. In 1849, Paul Julius Reuter started a carrier pigeon service to fly stock quotes between Aachen and Brussels, a service that operated for a year until the telegraph hole was closed.
That’s how we got from 1G to 5G
o 1G (1981): An analog network that enables wireless devices to communicate
o 2G (1991): Digital network, which among other things entails the possibility of sending an SMS
o 3G (1998): Seriously allows you to go online via your phone
o 4G (2010): Engine on the smartphone wave, where the phone becomes a computer that can stream at high speed
o 5G (2020 in DK): Expected to be about 100 times faster than 4G
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