YES NOPE9 wrote: > I want to use the lowest end PIC that has a USB interface and > firmware to support the serial port class. Look at the 18F25K50 or thereabouts. There may be a smaller version in tha= t subfamily with less memory and therefore lower cost, I don't remember off the top of my head. You can look all this up easily on the Microchip site. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .