Comunication of technology  

                  Introduction: At present we consider that: the TV, the phone and computer are part of the TIC (Information technology and communication).

Basics concept:

Communication is the transmission of information from a sender to a receiver.

In any communication process are the following: 

 -Issuer: A person who communicates something to others.

 -Message: Information that the sender sends to the receiver.

 -Channal: Physical element that established the connection between the sender and receiver.

 -Receiver: A person who receivers the message through the channel and interprets it.

 -Code: The code allows the issuer to develop the message and the receiver interpret.

 -Context: Relatioship  established between the words of a message and we clarify and facilitate the understand of what is meant.

                  History: In the late nineteenth century, the telephone was considered a new technology. Could be aplied to television. Was popularized in the decade of the 50 can be considered thet the telephone, the television and the computer is part of what is called ICT. Ed after the invention of the estructure of the information society were by electric telegraph, the telephone and radiotelephone. Internet and tevesion van be on the phone, which is also a machine to take pictures. In 2000 the association of computer manufacture devices with multifuntion allowed. The COMP, technological unication, stock market, and military ronotics, help the disable. After the invention of writing, the first steps towars an information society were marked by the electricity. The mobile phone and GPS have associety tex imagine and the word. Internet adn TV  are available in the mobile phone, which is also a machine the take pictures.

                  A new concep:Not surprisingly, being informed by the minute, communicated with people across the planet, see the video of song or work together without being in one place. The information technology anmd communication have become, at hingh speed, an important part of our lives. Is due to the main invention in 1969: internet. Internet was made as the part of the Agency Network Advanced Researched Project (ARPANET), created by the Departament of Defense Unuted States and was designed to communication the different agencies in the country.

                  Technologies:  ICT make up the set of resourses required to manipulated information: computers, software, and networks necessary to convert, store, manage, tansmitid and find.

ICT can be classified as:

  -Networks.

  -Terminals.

  -Services.

             Fixed telephony: The most basic method to make a connection to the internet is the use a modem. In almost European Union countries, the degree of availability of phone line in homes is very high.

             Broadband: Broadband origynally refered to a capacity internet access than analogue access (56 Kbps on a basic or dial 128 Kbps ISDN  basic access).

            Mobile telephony:  Despite being a modality latest worldwide using more mobile than fixed. It is because mobile networks are easer and cheapter to deploy.

-Terrestrial television, which is the traditional method of transmitting television broadcast signal, in the from of radio waves transmitted through open space. This section would includet DTT.

-The satellite television broadcast  consisting of a communications satellite froms a television signal amitted from a point on the Earth, so thet it it can reach other parts of the planet.

-The cable in which in RF signals are tasmited throud optical fibers or coaxial cables.

-Trnslates internet TV content in a form that can be transported over IP networds, so it is also as IP TV.

              Transmission media: 

             *Types wired transmissed media: 

 We have seen thet when the signal is transmissed electrically, must do so through a wire. There are also cables (optical fiber) that allow the transmission of light waves or electromagnetic. There are different types of cables and the choice of one or the other depends on what you have to transmitted.

The main types are:

 -Twisted Pair.

 -Coaxial Cable.

 -Optical Fiber Cable.

                  *Types wired transmission media:

Consists of a single wire surrouded by an insulating layer and this in turn on a metal mesh.

              Types of waves: 

  -Sonds waves: which propagate through the air and the human voice.

   -Propagation electromagnetic: waves in a vacuum and are transmitted to the speed of light, 300,000 miles per second.