In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Jon Williams wrote: The Robolympic badge drives the rows high (from RC) while pulling the selected column (output on RA through a multiplexer) low -- does your modified circuit work like this too? ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=97747#m97824 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2005 (http://www.dotNetBB.com)