A unique introduction to the many facets of electronics guided by industrial rather than academic practice, Gateways into Electronics relies on timeless principles rather than special methods and quickly provides the reader with the tools to explore the literature quantitatively and design simple instruments with assurance. It is thus an invaluable resource for scientists and engineers seeking to understand and develop applications of electronics in their fields. Covering linear systems, circuit theory, operational amplifiers, semiconductor devices, feedback systems, and digital circuits at a level accessible to anyone with a good grasp of elementary calculus and the bare bones of physics, this comprehensive work also offers clear and compact discussions of generalized functions, Laplace and Fourier transforms, the electromagnetic foundations of circuit theory, transmission lines, modulation and detection, random processes and noise, and signal recovery. Gateways Into Electronics is supplemented by nearly 500 figures and by carefully crafted examples and exercises that extend the material provided in the text or use it in a new context. Results are clearly stated, and thus provide immediate feedback as well as future reference.