In electronics (II), the aim is to shift the emphasis to the integrated circuits and their applications. In this part, we will introduce the most common signal-processing function, amplification, and the characterization and types of amplifiers. We also introduce how to analyze the electronic circuits, including the introduction of means in processing the signals, understanding their characterizations both in time and frequency domains, and analyze their analog and digital performance of the electronic components. For each sub-item been introduced, a lab experiments is designed to allow the student has the opportunity to hands-on the practical circuits and know the components' characteristics in more detail.