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
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
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