1. INTRODUCTION TO
TELECOMMUNICATIONS
ALVARO ROBLEDO
3R ESO B

2. COMMUNICATION
Communication is the exchange of
information between subjects and
objects.
The source, channel and message have
to do with communication, because
without them there would be no
communication.

3. TELECOMMUNICATION .
 Telecommunications is signal
transmission distance through
any medium to communicate to
us.

4. HISTORY OF TELECOMMUNICATION
The telegraph is the first engineering Telecommunications.
It was presented by Samuel Morse on 6 February 1833, it is equally true that
Gauss and Weber communicated since at least 1822 as an electric telegraph
created by them linking the two offices, located in the observatory Physics and
astronomy faculty respectively.
Was closely related to the appearance of news agencies, also influenced the
change of the press and the proper functioning of Havas benefit during its
infancy.

5. World Telecommunication Day.
On World Telecommunication and Information Society is 17 May.
The event commemorates the anniversary of the signing of the
first International Convention telegraphic and creating the
International Telecommunication Union (ITU), the United Nations
specialized agency for information technology and
communication.

6. WIRELESS COMMUNICATION
Wireless communication or wireless is one in which the communication
ends (transmitter / receiver) are not connected by physical means to
spread, but used the modulation of electromagnetic waves through
space. In this sense, physical devices are present only in sending and
receiving the signal, among which are: antennas, laptops, PDAs, cell
phones, etc..
This is done through radio waves, facilitates the operation where the
computer is not in a fixed location.