http://www.8051projects.net/ Learn to make simple microcontroller projects, pic, 8051, avr and arm projects. download 8051 projects, tutorials, libraries, sample codes. join the microcontroller discussion forum and ask doubts regarding electronics. the best source for 8051 over internet. en-gb 2009-01-07T21:37:30-08:00 contact@nospam.com hourly 1 2000-01-01T12:00+00:00 http://www.8051projects.net/forum-t4922.html 2009-01-07T21:37:30-08:00 can u please give me the circuit diagram of microcontroller based UPS iits very urgent http://www.8051projects.net/forum-t4922.html 2009-01-07T21:37:30-08:00 shyam urgent...i believe they r not for sale....still will try u to find one link!!