July 10, 2020
For educational institutions
jose luis herrera lozada
linea del tiempo
Luis Edko Herr
⟶ Updated 11 Oct 2017 ⟶
List of edits
5000 A.C. prehistory
Prehistoric man communicated through grunts and other sounds
3000 A.C Egyptians
represented the ideas through symbols
The Romans used torches (telegraphic optical system)
in 1500 AZTECS
the communication was by means of messages written and carried by men on foot
The Indians of North America made use of smoke signals
Telegraphic Optical Systems (use of flags, or traffic lights)
in April 3 of 1860 the Communication was by horses
The United States launches Western Union's Westar I & II satellites.
in 1976 started the first Super TV Station
in 1979 The INMARSAT consortium (INternational MARitime SATellite organization)
in 1981 CELULAR TELEPHONY is born
The first HDTV formats are born
in 1985 Mexico launches its first satellite called Morelos
in 1989 The second Mexican satellite Morelos II
in 1993 in the United States begins the cellular telephony with digital technology.
Some event happened
On June 7, 1995, the Federal Telecommunications Law was published in Mexico.
It was 25 years in the United States of the first commercial cell phone service
February 7, 2009 The United States turns off analogue television to make way for Digital Television.
About & Feedback