The communication devices They are devices that generate and / or receive analog or digital signals, allowing the exchange of information. These media were created by humans throughout their historical evolution..
In a broad sense, a communication device is any device that can be used to transmit a message. In current times they are constituted as the main protagonists of communication technologies (ICT).
Computers or computers are the most representative communication devices. These electronic machines have been designed to receive, process data and convert it into information.
As communication devices, computers are faster and more efficient in relation to other traditional devices such as the telephone and the mail..
It is a device that transforms digital signals into analog through a process called modulation, and analog signals into digital through demodulation.
Its function is to send the modulating signal through another signal called a carrier. The modem arose from the need to communicate computers to share data between them.
It is a digital device that serves for the interconnection of computerized equipment, or segments of a network made up of them. Also called a switch.
It operates logically by merging sections of the same network, filtering the information in order to optimize it in terms of performance and security..
It is also called a packet router or router. This device allows the use of several IP addresses within the same network, allowing the creation of subnets.
It is a wireless electronic device for accessing mobile telephony. It is called cellular because each of the repeater antennas that are part of the network is made up of cells..
These types of devices are connected through an elaborate network that achieves long-distance communication by having a built-in LAN.
Long distance phone calls occur by digital modulation of analog carrier signals.
Satellite phones allow efficient communication in the most remote places on Earth.
These devices use the same mobile technology by locating low-orbit satellites rotating in space..
When the link to the satellite is established, the signal is redirected to a communication station on earth.
VOIP technology consists of the transmission of telephone signals back and forth over the Internet.
Telephone conversations based on devices of this technology are clearer compared to conventional telephony.
This device allows to determine the exact and precise position of an object on Earth. It is used to locate children, the elderly and people with disabilities.
It is also used for the location of vehicles as a preventive measure against theft.
Augmentative or assistive, are communication devices that give voice to people with disabilities, allowing them to express themselves without the need to be assisted by other people.
Bluetooth devices allow several devices to be connected to each other at a short distance, with the peculiarity that any type of wiring can be dispensed with. Thanks to its low frequency radio waves, we can exchange information at high speed in a comfortable way.
Before Bluetooth was developed, infrared was the main wireless data transmitter. However, its technology was not very powerful, since it required that the devices had to be practically glued and the transmission speed was not especially fast.
Using the telephone signal, the FAX could transmit documents and other types of texts from one device to another over long distances. It was the evolution of the teletype, functioning as a photocopier. However, new technologies have made it obsolete.
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