I have seen mentioned quite a few times that a good reference for electronics is Horowitz and Hill "The Art of Eletronics" What is the reference of coice for the programming portion of PIC circuits. I am looking for somthing that has fast and compact techniques to perform various tasks in software rather than brute force methods that usually are slower. - -Mark _________________________________________________________ DO YOU YAHOO!? Get your free @yahoo.com address at http://mail.yahoo.com