This textbook provides comprehensive coverage of analogue and digital circuits and devices, supported by circuit theory and semiconductor physics to make the book self-contained. All types of diode and their applications are discussed, and more than 100 worked examples and over 200 problems, with answers, are included. Biopolar and field-effect transistors are described, together with the behaviour of single-transistor amplifiers, multi-transistor amplifiers, current sources and other integrated circuit building blocks. Feedback, operational amplifiers, filters, waveform generators and power supplies are examined. Chapters on combinational and sequential logic include a comparison of logic families. Microcontrollers and microprocessors are covered, as are measurements, transducers and EMC.