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 2008-12-01T22:55:00-08:00 contact@nospam.com hourly 1 2000-01-01T12:00+00:00 http://www.8051projects.net/forum-t13293.html 2008-12-01T22:55:00-08:00 HI!! IF SUM1 KNOWS HOW TO CONVERT THE ELECTRICAL SIGNALS TO OPTICAL SIGNALS THEN PLS TELL SOMETHING ABOUT IT http://www.8051projects.net/forum-t13293.html 2008-12-01T22:55:00-08:00 Arun Kumar V you mean Fiber optics ?Arun http://www.8051projects.net/forum-t13293.html 2008-12-01T22:55:00-08:00 Arun Kumar V hello friend, may be you don't know forum rules, pl.don't use BOLD wording and stop using SMS lingo.coming to your request, the answer is : bulb, LED, IR LED, Laser(torch) all these can be used to convert electric signals to optical signals.Arun http://www.8051projects.net/forum-t13293.html 2008-12-01T22:55:00-08:00 project_maniac thank you for the suggestion ,but i m searching for the circuit that converts the electrical to optical signal http://www.8051projects.net/forum-t13293.html 2008-12-01T22:55:00-08:00 Ajay simple LED/Laser diode connected to any one pin of controller. that LED/diode can be mapped to fiber optic cable to transmit data.