www.calculatoredge.com
www.datasheetcatalog.com
www.datasheetarchive.com
http://8085projects.info/proj.asp?ID=15
http://www.electro-tech-online.com/electronic-books/index2.html
http://www.talkingelectronics.com/te_interactive_index.html
http://www.8051projects.net/download.html
http://pinoylibrary.blogspot.com/2009/09/textbook-of-electrical-technology.html
http://www.hobbyprojects.com/microprocessor_tutorials.html
http://www.allaboutcircuits.com
http://8085projects.info/proj.asp?ID=15
http://www.electro-tech-online.com/electronic-books/index2.html
http://www.talkingelectronics.com/te_interactive_index.html
http://www.8051projects.net/download.html
http://pinoylibrary.blogspot.com/2009/09/textbook-of-electrical-technology.html
http://www.hobbyprojects.com/microprocessor_tutorials.html
http://www.allaboutcircuits.com