Video to be uploaded soon on Youtube. This talk was given on May 17, 2013, as part of a micro teaching session during a TA training workshop at NUS. It was organised by the Centre for Development of Teaching and Learning. Slides available for download : http://kknundy.thinkbiosolution.com/slides/20130617_communications.pdf

1. Koushik Kumar Nundy
NUS Graduate School for Integrative Sciences and Engineering

2.  Man is a social animal
 We need each other to survive
 To help each other, we need to understand each other
 We love to brag
 We like to be reminded that we’re not alone
Koushik Kumar Nundy kknundy@ieee.org

3. Digital communication shouldn’t just be a degraded version of
talking with someone in person. When we can share, emote and
collaborate seamlessly no matter where we are or what device
we’re on, brilliant things will happen.
JOSH CONSTINE
TechCrunch
Koushik Kumar Nundy kknundy@ieee.org

4.  Cave Drawings
Koushik Kumar Nundy kknundy@ieee.org
El Castillo (oldest recorded ~ 40,000 to 100,000 years ago)

5.  Smoke/Fire Signals
 Mentioned by Homer in Iliad (1200 B.C.)
 Great Wall ( 7th Century B.C.)
Koushik Kumar Nundy kknundy@ieee.org

6.  Smoke/Fire Signals
 Mentioned by Homer in Iliad (1200 B.C.)
 Great Wall ( 7th Century B.C.)
Koushik Kumar Nundy kknundy@ieee.org

7.  Smoke/Fire Signals
 Mentioned by Homer in Iliad (1200 B.C.)
 Great Wall ( 7th Century B.C.)
Koushik Kumar Nundy kknundy@ieee.org

8.  Smoke/Fire Signals
Koushik Kumar Nundy kknundy@ieee.org
WHEN IS THIS ?

9.  Smoke/Fire Signals
Koushik Kumar Nundy kknundy@ieee.org
WHEN IS THIS ?
2013 Papal Conclave,Vatican City

10.  Pigeon Post
 Stands the test of time
 IP over Pigeon protocol
Koushik Kumar Nundy kknundy@ieee.org

11.  Pigeon Post
 Started over 2000 years ago
 Used in the ancient Olympics
 Wide use in the World Wars
Koushik Kumar Nundy kknundy@ieee.org

12. ASYNCHROUS COMMUNICATION
Divided in time Divided in space
Koushik Kumar Nundy kknundy@ieee.org
TELECOMMUNICATION

13. THE BIG STEPS
Koushik Kumar Nundy kknundy@ieee.org

14.  Semaphores – before 1791
 Electric Telegraph – 1844 - Morse
 FAX - 1843 - Alexander Bain.
 Multiplex telegraph – 1870 – Thomas Edison
 Voice telephony - 1876 - A. G. Bell
 1935 - First telephone call around the world.
 Wireless Telegraph – 1890s – G. Marconi/J. C. Bose
 Modern Optical Fibre – 1960s – Charles Kao
 ARPANET - 1969
 Wireless Phones – 1973
 WWW – 1991 - Tim Berners-Lee
Koushik Kumar Nundy kknundy@ieee.org

15. Can anyone think of any other major telecommunication technique
developed in the past 200 years?
Koushik Kumar Nundy kknundy@ieee.org

16. “We found that the voice is very weak and indistinct, ...
… Technically, we do not see that this device will be ever capable of sending
recognizable speech over a distance of several miles.”
Telegraph operator CEO about the telephone and Bell’s efforts
Koushik Kumar Nundy kknundy@ieee.org

17. “We found that the voice is very weak and indistinct, ...
… Technically, we do not see that this device will be ever capable of sending
recognizable speech over a distance of several miles.”
Telegraph operator CEO about the telephone and Bell’s efforts
“If you really look at it, I was trying to sell a dream ...There was very little I
could put in concrete to tell these people it was really real.”
Charles Kao about the fibre-optic cable
Koushik Kumar Nundy kknundy@ieee.org

18.  In this topic we will come across the terms digital and analog communication a
number of times. People without a background in telecommunications are strongly
advised to read the following introduction primers for a basic understanding.
 Digital Communication :
http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-450-
principles-of-digital-communications-i-fall-2006/lecture-notes/book_1.pdf
 Analog Communication :
Primer included in website(link no longer active)
Koushik Kumar Nundy kknundy@ieee.org

19. “I know nothing except the fact of my ignorance.”
~Socrates
Koushik Kumar Nundy kknundy@ieee.org

20. Koushik Kumar Nundy kknundy@ieee.org