apology for those who received this earlier! Hi All, I recently made a pcb of 8x8 keypad with two "E"s facing eachother at each keypad point. Somehow, the port always gives value when it is supposed to be "0" since there is no keypress. Is this a capacitance or resistance problem? any help greatly appreciated. Yansong -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads