The material in Electronics - Circuits and Systems is a truly up-to-date textbook, with coverage carefully matched to the electronics units of the 2007 BTEC National Engineering and the latest AS and A Level specifications in Electronics from AQA, OCR and WJEC. The material has been organized with a logical learning progression, making it ideal for a wide range of pre-degree courses in electronics. The approach is student-centred and includes: numerous examples and activities; web research topics; Self Test features, highlighted key facts, formulae and definitions. Each chapter ends with a set of problems, including exam-style questions and multiple-choice questions. The book is now also supported by a companion website featuring extensive support for students and lecturers, including answers to the questions in the book, interactive exercises, extra math support and selected illustrations from the book.