>> See the attached schematic. OK >Use one resistor/LED. Well, he doesn't need to if the leds are multiplexed, which would be OK in this application, so only one LED is on at a time. Even flicker would be acceptable as the LEDs are scanned - shows that the unit is operating, and not stalled. >And where are the values of all components ? That is the more important thing, and what micro are you using ???? - OH it is in the subject line, but not on the circuit - bad move. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist