Telecommunications
The transmission of words, sounds, images, or data in the form of electronic or
electromagnetic signals or impulses. Transmission media include the telephone
(using wire or optical cable), radio, television, microwave, and satellite. Data
communication, the fastest growing field of telecommunication, is the process of
transmitting data in digital form by wire or radio. Digital data can be
generated directly in a 1/0 binary code by a computer or can be produced from a
voice or visual signal by a process called encoding. A data communications
network is created by interconnecting a large number of information sources so
that data can flow freely among them. The data may consist of a specific ...
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Telephone). It can also take the form of a microwave or a
communications-satellite linkage, or some combination of any of these various
systems.
Hardware and Software
Each telecommunications device uses hardware, which connects a device to the
transmission line; and software, which makes it possible for a device to
transmit information through the line.
Hardware
Hardware usually consists of a transmitter and a cable interface, or, if the
telephone is used as a transmission line, a modulator/demodulator, or modem. A
transmitter prepares information for transmission by converting it from a form
that the device uses (such as a clustered or parallel arrangement of electronic
bits of information) to a form that the transmission line uses (such as, usually,
a serial arrangement of electronic bits). Most transmitters are an integral
element of the sending device. A cable interface, as the name indicates,
connects a device to a cable. It converts the transmitted signals from the ...
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data to or receives data from the
host computer. For example, many airlines have terminals that are located at the
desks of ticket agents and connected to a central, host computer. These
terminals obtain flight information from the host computer, which may be located
hundreds of kilometers away from the agent's site. The first terminals to be
designed could transmit data only to or from such host computers. Many terminals,
however, can now perform other functions such as editing and formatting data on
the terminal screen or even running some computer programs. Manufacturers label
terminals as "dumb," "smart," or "intelligent" according to their varying
capabilities. These terms are ...
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Telecommunications. (2006, April 8). Retrieved April 25, 2024, from http://www.essayworld.com/essays/Telecommunications/44070
"Telecommunications." Essayworld.com. Essayworld.com, 8 Apr. 2006. Web. 25 Apr. 2024. <http://www.essayworld.com/essays/Telecommunications/44070>
"Telecommunications." Essayworld.com. April 8, 2006. Accessed April 25, 2024. http://www.essayworld.com/essays/Telecommunications/44070.
"Telecommunications." Essayworld.com. April 8, 2006. Accessed April 25, 2024. http://www.essayworld.com/essays/Telecommunications/44070.
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