With a broadened scope, more emphasis on applied computing, and new and significantly revised chapters, the second edition of this reference for computer scientists, software engineers, and IT professionals conveys the current accomplishments and direction of computer science. Discussions now reflect the growth of the Internet and the increasing importance of developments such as massively parallel computation. New chapters cover topics including cryptography, computational chemistry, cognitive modeling, scripting languages, data compression, and event-driven programming. Tucker teaches computer science at Bowdoin College.