WORLD OF COMMUNICATIION

communication
What is Communication
I think it is
talking.
Our Teacher taught
us about Postman
telegraph,telephone
radio&T.V
Oh no it is not
talking it is
sending and
receiving
messages.
Well it is fine
there is more to
it .Let us find
out.
AND THE SEARCH BEGINS
Ok! I will talk
to people who
know more
about it.
I will explore
libraries and
surf the
internet.
•GRAND MOTHER
TOLD…
• In ancient times letters were delivered by pigeons
and by horsemen. There were no trains and buses.
•It would take months and years to go to a foreign
land. There were no airplanes.
•It was extremely difficult to find out about the well
being and whereabouts of the loved ones.
•She also told that animals also communicate.
I EXPLORED THE LIBRARIES
AND THE INTERNET.
I FOUND………
•Communication,the process of transmitting and
receiving ideas,information and messages has
helped the development of gestures and
languages.The 26 letters of the alphabet are
represented by the hand held flag positions.The
digits0&1 to 9 were represented by the same
signals as those used for the first ten letters.This
signaling by means of hand held flags was
formerly used for military purposes at sea and
on land.These flag positions are as
-------
HAND HELD FLAG POSITIONS
ANIMALS ALSO COMMUNICATE

Charles Darwin pointed the importance
of communication in biological survival.
For example,when bees discover a
source of nectar ,they reveal its location
to the other bees on returning to the
hive.They communicate the distance by
means of a dance,the direction by the
angle of the axis of the dance and the
amount of nectar by the vigorousness
of the dance.
COMMUNICATION SATELLITES

Now a days communication satellites
are launched into the space.Modern
communication satellites
receive,amplify and re-transmit
information back to earth providing
television, tele-fax,telephone,radio links
around the world.It is through
communication satellites that sports
and other events can be shown
simultaneously as they happen in any
part of the world.
DATA COMMUNICATIONCOMPUTERS

Data communication is a revolution in
communications.Modern computers are based
on the concept of binary digits,known as
bits,that can only take values of 0 & 1.With all
of the data stored and manipulated within a
computer being held in the form of bits,any
data transfer between computers also involves
sending bits from one place to another.A
stream of digits sent from one computer has to
be reassembled into meaningful information.
Computers in the Classroom
Since their arrival on the market in the late 1970s,
desktop computer systems have revolutionized
business. Computers can also aid the research and
compiling aspects of school projects, and many
teachers also incorporate the machines into the
learning process. A primary advantage of computers is
the amount of information they offer via networking to
a wide range of databases. The graphics these
students are studying represent only one of the many
options and capabilities offered by today’s
educational software.
THERE IS STILL MUCH MORE
World of
communication
is really very
vast.
No wonder our
world has become
a global village .
AND THE SEARCH GOES ON……
AND THE SEARCH GOES ON……
SOURCES OF INFORMATION



Microsoft Encarta
Lets look around and Learn-N.C.E.R.T
Book
Dialogue with Grand parents and other
people.
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WHAT IS COMMUNICATION