Hi there, I want to ask you about which are the design architectures for hardware? e.g. on software I know mvp (model view present) mvc (model view controller); so on hardware which are there? thanks in advance. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .