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. Thu, 04 Dec 2008 16:33:59 -0800 http://backend.userland.com/rss092 HI!! IF SUM1 KNOWS HOW TO CONVERT THE ELECTRICAL SIGNALS TO OPTICAL SIGNALS THEN PLS TELL SOMETHING ABOUT IT <noauthor@nospam.com> http://www.8051projects.net/forum-t13293.html you mean Fiber optics ?Arun Arun Kumar V<nura1002003@nospam.com> http://www.8051projects.net/forum-t13293.html 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, Arun Kumar V<nura1002003@nospam.com> http://www.8051projects.net/forum-t13293.html thank you for the suggestion ,but i m searching for the circuit that converts the electrical to optical signal project_maniac<cool.sawhney@nospam.com> http://www.8051projects.net/forum-t13293.html simple LED/Laser diode connected to any one pin of controller. that LED/diode can be mapped to fiber optic cable to transmit data. Ajay<contact@nospam.com> http://www.8051projects.net/forum-t13293.html