This series of eight interactive modules was developed at Virginia Polytechnic Institute to give undergraduate computer science students a unique online resource for introductory course material. "Each module consists of a set of lessons and review questions with embedded interactive components." Topics include non-decimal number systems and arithmetic, operating systems, programming languages, and software engineering, to name a few. There is even a module that breaks down the fundamental hardware components of a computer's architecture. The animations are of high quality and demonstrate various concepts quite well.