useful links

http://www.pdfgeni.com/
http://robotics.youngester.com/2010/04/embedded-systems-in-robotics.html
http://worldwidescience.org/topicpages/d/detection+and+identification+system+applications.html
http://www.eg3.com/
http://shop.autoanything.com/electrical-components/20A54675A1.aspx?w4n=1