For first and second-year courses in Electronic Devices and Circuits and Linear Electronics at the Technology level. Rather than attempt to superficially cover every aspect of circuits and devices, this practical new introduction focuses on device modeling, circuit operation and analysis, and applied design in a way that establishes an understanding of how devices fundamentals can be applied in a wide range of circumstances. Basic devices are introduced through a two-chapter format that consists of a first chapter dealing with the particular device category and its models, followed by a second chapter dealing with simplified applications that use only resistive components. Prior to examining transistor amplifier circuits, a general development of amplifiers from a block diagram point of view is presented; and, concepts such as gain, input resistance, output resistance, stage loading, and interaction are developed with simple models before students become involved in specific circuit details. Manufacturers' specification/data sheets are used throughout the coverage.