LINKS
http://www.allaboutcircuits.com/
http://www.altera.com/
http://www.xilinx.com/
http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6...
http://services.eng.uts.edu.au/~venkat/pe_html/peintro.htm
http://www.cosmolearning.com/video-lectures/lecture-10-amplifiers-small-...
http://videolectures.net/mit6002s07_agarwal_lec19/
http://freevideolectures.com/Course/1990/Circuits-and-Electronics
http://www.animations.physics.unsw.edu.au/jw/RCfilters.html
http://www.phys.unsw.edu.au/jw/hearing.html