At 10:37 AM 4/8/97 +0300, you wrote: >Please urgent help . This is a foolish question and nothing to do about >pics but it is vital . What is the pin diagrams of a 7 segment cathod >display . I mean HOW IS IT USED ?? . 5 volts to 100 ohms and then A-B-C .. >etc but which pins are A-B-C .. . Please urgent help . I use HDSP 5503 10 9 8 7 6 1 2 3 4 5 1 e 2 d 3 common cathode 4 c 5 DP (decimal point) 6 b 7 a 8 common cathode (connected to 3) 9 f 10 g /antti No Limits Go To Basics of AVR AVR AVRBASIC www.avrbasic.com Born for Basic Grand opening in August. Watch out for first week offers.