This is the essential textbook for students following pre-degree level courses, technician engineers, and all who need to access a straightforwardly written reference covering all the major areas of 21st century electronics. Mike Tooley's classic reference texts "Electronic Circuits Handbook" and "Electronics Circuits Students Handbook" have long offered a unique coverage of analog and digital electronics and applications in a single volume. The two versions of this title have now been combined to produce a major textbook which combines comprehensive coverage of principles and applications with readability and ease of use. New material on communications engineering, test and measurement and fault-finding bring the coverage up-to-date with the latest developments and reinforce the relevance of this text for a wide range of electronics courses, for maintenance and operations engineers as well as those following traditional electronics courses.The coverage has been matched to the latest UK pre-degree syllabuses: AVCE and the new 2001/2 BTEC National specifications, as well as the relevant City & Guilds certificates and NVQ schemes. However, the book is designed as a reference text, meeting the needs of students, amateurs and professionals. It covers principles and applications of analog and digital electronics in one volume. It is ideal pre-degree student text. it is a straightforward reference text for a wide audience of technician engineers, students and enthusiasts.