Thorough and up-to-date, yet concise enough to allow students to quickly grasp the essential elements of a host of interrelated communications technologies. David Gunzerath, Department of Communications and Theate Arts, Old Dominion University CTU is the best broad-based book for exposing students to the many subtleties of information technology. This work fills a void that once required many tests and sources to fill. Staying knowledgeable and current in IT is like painting a moving train, and this book is a fabulous effort that brings the reader into the present. Joseph Screnci, School of Comm, Hawaii Pacific U