evolution of communication echnology

1. EVOLUTION OF
COMMUNICATION
BY BHUWNESH BHATT (B.ED 2ND SEM)
F r o m s i g n s t o s i g n a l s

2. What is communication?
 Exchange of information by
speaking, writing, or using
some other medium.
"Transmission of information"

3. Ancient times ( Short Distane )
As we all know we cannot talk without a language.
So how did our ancestors communicated?
Signs Sounds

4. Long Distance
The Smoke Signal
It is one of the oldest forms of long distance
communication. It is a form of visual
communication used over long distance. In
Ancient China, soldiers stationed along the
great wall would alert each other of impending
enemy attack by signaling from tower to tower.
In this way, they were able to transmit a
message as far away as 750km (470miles) in
just a few hours.

5. Pigeon Post
It is the use of homing pigeons to carry
messages. Pigeons were effective as
messengers due to their natural
homing abilities. The Pigeons were
transported to a destination in cages,
where they would be attached with the
messages, and then naturally the
pigeon would fly back to its home
where the owner could read his mail.
Pigeons have been used to great
effect in military situations.

6. Mailing System
 Mail or post is a system for transporting letters & other
tangible objects: written documents typically enclosed in
envelopes & also small packages are delivered to
destinations around the world.
 Anything sent through the postal system is called mail or
post. A postal service can be private or public, though many
governments place restrictions on private systems.

7. Mailing System
Relay System
receive and pass on
Messenger or
Rajdoot

8. Medieval times
The oldest direct handwritten news
sheets circulated widely in Venice as early as
1566. These weekly news sheets were full of
information on wars and politics in Italy and
Europe. The first printed newspapers were
published weekly in Germany from 1605.
Title page of Carolus' Relation from
1609

9. Modern Ways ( The industrial Revolution)
 The Industrial Revolution (was a period of global
transition of human economy towards more efficient
and stable manufacturing processes using high tech
machines.
 This occurred during the period from around
1760 from Britain.

10. The First thing we got was!
 After the English government relaxed
censorship in 1695, newspapers flourished
in London and a few other cities including
Boston and Philadelphia. By the 1830s,
high-speed presses could print thousands
of papers cheaply, allowing low daily costs.

11. Telegraph
The sender uses symbolic
codes, known to the
recipient, rather than a
physical exchange of an
object bearing the message.

12. Process of Telegraphy
Sender Receiver Decoder

13. Telephone
In 1876, Alexander Graham Bell was
the first to be granted a United
States patent for a device that produced
clearly intelligible replication of the
human voice at a second device.[2] This
instrument was further developed by
many others, and became rapidly
indispensable in business, government,
and in households.

14. Radio
 1894, the young Italian inventor Guglielmo
Marconi began working on the idea of
building long-distance a wireless
transmission systems based on the use of
Hertzian waves (radio waves),
 A regular transatlantic radio-telegraph
service was finally begun by him on 17
October 1907.

15. Television
 John Logie Baird is the person who is
given credit for inventing the television
for the very first time. He experimented in
an attic room in London for years until he
succeeded in transmitting an old, moving,
grayscale image of a talking ventriloquist
dummy on a screen in 1925. He called it
‘the Televisor’

17. Computing Technology
 British mathematician Charles
Babbage came up with the idea
for an automatic computer,
powered by steam, in 1837. He
finished designing his invention
in 1856, more than 100 years
before the first electronic ones.

19. Internet
In 1990, Tim Berners-Lee
invented the World Wide
Web, or WWW, which is
what most people
recognize as the Internet
today.