> I don't know many things. I want to be able to send from a source (pic, > RS-232 or something else) > a byte (e.g. 00101110) and to read it from the destination pic. I want the > pic to take this byte from only one pin. You might want to take a look at some of the standard protocols that the modern PICs supply: SPI and I2C. It shouldn't be difficult to find an eample for Dallas 1-Wire either. I tend to prefer SPI, but that could be purely personal prejudice because it's what was supported by my peripherals when I got into the PIC... -- D. Jay Newman ! Pudge controls the weather. jay@sprucegrove.com ! http://enerd.ws/~jay/ ! Oh good. My dog found the chainsaw. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.