In keeping with my philosophy of minimal component-count in any circuit, I'm wondering if it is an acceptable strategy to run multiplexed 7-segment LED's thru a 16F872 output port w/o the use of current-limiting resistors, when the current I need is the max rating of the output port (25ma source or sink). Typically I would calculate the resistor as R = (V-port - V-led) / I-led, but if I-led is already where I want it, do I still need to insert a resistor for the required voltage drop? A little more in-depth, what exactly does the datasheet's "Max o/p current sourced by any pin" mean? The max that it can put out, or the max that I should try to get out of it? Cheers, -Neil. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.