http://www.signalsbyspreadsheet.com An Integrated Hardware/Software Solution for Controlling a Model Railroad Wed, 30 Jun 2010 16:23:09 +0000 http://backend.userland.com/rss092 en Signals By Spreadsheet makes it easy for the average model railroader to implement prototypical signaling on his/her layout. We realize that implementing an operational signal system can be an intimidating task. The options range from "hardwired" logic to computer-based implementations, requiring a full staff of engineers and programmers - UNTIL NOW. To determine ... http://www.signalsbyspreadsheet.com/?p=1