Em 11/9/2010 22:36, Forrest W Christian escreveu: > I am building a test apparatus (ok, it's a cable mapper) which will=20 > require around 256 bits of I/O on a pic system. Maybe even more. > If you don't need the pins to be bi-directional you could use the 74HC595 (output only) and 74HC597 (input only). They work serially and can be daisy-chained, you would save all the chip-selects. Isaac __________________________________________________ Fale com seus amigos de gra=E7a com o novo Yahoo! Messenger=20 http://br.messenger.yahoo.com/=20 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .