This book on VLSI has been compiled with two aims; first, to provide the reader with a systematic approach in learning the VLSI models and secondly, to provide a conceptual handbook on VLSI designs. Applications of VLSI models have been covered in detail in this book. The chapters describe the designing as well as implementations and other aspects of VLSI design thoroughly. While on one hand, this book can be used as a guide by students; on the other, it can serve as an advanced text in this field to keep a track of the recent advancements in the VLSI designing technology.