Don Fiehmann has combined his knowledge of electronics with his interest in model railroading and Digital Command Control in writing The DCC Guide. This is Don's second book for Kalmbach; his first, Basic Electronics and Electricity for Model Railroaders, was published by Kalmbach in 1988. Don retired from IBM in 1992 after working nearly 35 years as an electronics engineer. Along with writing and pursuing his hobby of model railroading, Don continues to work as a consultant in the hobby industry.