Hi, I am investigating the possibillity to have 4 PIC 16F877 connected to the same PC on a RS232 'bus'. I am using MAX220CPE, can they be connected in parallell or will they go up in flames ? /PJ -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics