Held, an independent author and lecturer who specializes in communications technologies, has written this primer on LED applications to reflect current trends that have lead to widespread use of these devices. The author starts with a discussion of the basic properties of light and color before exploring the operation of p-n junctions, organic LEDs and LED drivers. Engineers and students will be interested in innovative LED applications in communications technologies as well as how to use these devices as alternatives to fluorescent and filament-based lighting. Annotation ©2009 Book News, Inc., Portland, OR (booknews.com)