Hi all, I found a webpage where the owner really knows how a 555 can be used for various applications. The 555 is an analog low performance microcontroller. :) http://home.cogeco.ca/~rpaisley4/LM555.html happy browsing... --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .