Television was first introduced in Mexico in the 1930s through experimental broadcasts. The first commercial TV channel in Mexico and Latin America launched on August 31, 1950. Color broadcasts began in 1967. Mexico began using communication satellites to broadcast the 1968 Olympics around the world. The United States saw its first public TV broadcasts from CBS and NBC in 1930, with the first TVs marketed in the 1950s leading to over half of US households owning black and white TVs by 1955. The UK's first TV channel, BBC One, launched on November 2, 1936, becoming the first TV network in the country.

2. Television in Mexico
(a little history)
 The first steps of television in Mexico, in
the experimental stage, dating back to
1934.
A 17-year-old student of the National
Polytechnic Institute, is experimenting
with a system of closed circuit television in
a small laboratory.

3.  Guillermo Gonzalez Camarena obtained a
patent for his invention both in Mexico
and the United States on August 19, 1940.
This color television system began to be
used for scientific purposes. In
1951, broadcasts from the National School
of Medicine, anatomy lessons.

4.  The first black and white transmission in
Mexico, takes place on August 19, 1946.
 The first commercial TV channel in Mexico
and Latin America was inaugurated on
August 31, 1950.
 The first color broadcasts were made in
1967.

5.  In September 1948, begin daily
broadcasts from the Palace of Mining of
the "First Exhibition Presidential
Objective." Thousands of people witness
thanks to receivers installed in shopping
centers. For all these facts, it is known as
the "Father of Mexican television."

6.  The first commercial TV channel in Mexico
and Latin America was inaugurated on
August 31, 1950, a day later, on
September 1, transmitting the first
program.
It is precisely in 1968 when Mexico was
venturing into the communications
satellite to broadcast across the world, the
various events of the XIX Olympiad Mexico
1968.

7. U.S. Television
 The first experimental transmissions were born
to life in USA It was in July 1928 from the
experimental station W3XK Washington, Jenkins
began broadcasting mainly scanned images of
films with some regularity and with a definition
of 48 lines.
 The first public television broadcasts of the CBS
and NBC made ​in the U.S. in 1930.

8.  The emissions program started in the
United States on April 30, 1939.
The color TV became operational in the
U.S. and other countries in the 1950s.
 Television is one of the most massive of
the United States. 99% of the population
has at least one TV in your home, and
most have more than one.

9.  Television was first marketed in the U.S.
in the 1950's.
Development of television stopped with
the outbreak of the Second World
War, but the pioneers returned to the
airwaves, when the conflict ended.

10.  Half of all U.S. households had television
sets in 1955, although the color was a
premium feature for many years (the
majority of households who can buy the
TV series could only afford black and
white models and few programs were
broadcast in color until mid-1960).

11.  Subscription television (eg, cable and
satellite) became popular in the 1980s.
 The U.S. has now moved to digital
television. U.S. networks began the
transition to the recording of their
programs HDTV in late 1990, a process
that is nearing completion.

12.  During the 2000s, further development on
U.S. television was the growth of reality
television, which proved an inexpensive
and entertaining programming scripts
primetime.
In 2008, there were an estimated 327
million televisions in the U.S..

13. TV in UK
 BBC One is the first television channel of
the BBC. It was opened on November
2, 1936 as Television Service of the BBC
and was the first television network in the
UK. Like the rest of the media of the
Corporation, this string is funded
exclusively through a license fee, and his
schedule is not interrupted by commercial
breaks.

14.  The simultaneous retransmission of sound
and image began March 30, 1930 through
a new transmitter, and gradually began to
develop emission testing continued.
 An important step in the consolidation of
the BBC television service was regular
press start, and the transmission of live
broadcasts, such as the coronation of
Elizabeth II of the United Kingdom.

15. Characteristics of television
 Television is an audiovisual medium (combines
sound and image) in which the recipient receives
the message at the moment it is issued. As in
radio, that message can be created at the time
of issuance (live broadcast) or may have been
created previously (delayed coverage).
 Although the medium allows the participation of
viewers, the truth is that few programs offer this
possibility, unlike what happens with the radio.

16.  This makes the TV has a low degree of
interactivity: viewers only influence
through quotas get every program screen.
 The TV has the same purpose as the
radio, to inform, guide, educate and
entertain. The different genres are
adapted to one or another function:
 Television news and some news reports
have the function report.

17.  Documentaries and educational spaces
whose function form.
Talk shows and many interviews are
intended to guide.
 Fiction programs (movies, sitcoms,
television serials ...), contests, magazines,
musicals, spaces of humor ... whose
function is to entertain. This is the
dominant role in the television and
devoted most of the spaces and
environmental resources.