No one Bus is the simplest. It depends on what you need the bus to do and how fast and how many wires and how long and etc. I would be glad to advise if you get more specifics. Gus -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ WFT Electronics wft@frii.com http://www.frii.com/~wft Gus Calabrese 303 321-1119......voicemail Lola Montes 1799 Uinta Street Denver, CO 80220 EMERGENCY: 791 High Street Estes Park, CO 80517 if no success with wft@frii.com, try .... wft@bigfoot.com