This course is an important branch of electronic technology foundation, and is an introductory technical foundation course for undergraduate students majoring in electrical, electronic information, and some non electrical majors in the field of electronic technology. The main content of the course includes basic knowledge of semiconductors, fundamentals of amplification circuits, multi-level amplification circuits, integrated operational amplification circuits, frequency response of amplification circuits, feedback of amplification circuits, signal operation and processing, waveform generation and signal conversion, power amplification circuits, DC stabilized power supplies, and reading of analog electronic circuits. This course aims to provide students with basic knowledge, theories, and skills in analog electronic technology through the analysis and design of commonly used electronic devices, analog circuits, and their systems, laying the foundation for in-depth learning of electronic technology and its applications in professional fields.