Digital Control for model trains:

Although most hobbies could count on the interest of vast numbers of people not all that long ago, times have changed and they now attract only a handful of faithful adherents. One of the more popular hobbies was that of model trains and this retains a core of enthusiasts. One of the aspects of this hobby that has changed considerably is the amount of electronic units that is now available to the discerning few. This article discusses how digital circuits may be used to control locomotives, points, and signals.