Solid-State Devices and Applications is an introduction to the solid-state theory and its devices and applications. The book also presents a summary of all major solid-state devices available, their theory, manufacture, and main applications. The text is divided into three sections. The first part deals with the semiconductor theory and discusses the fundamentals of semiconductors; the kinds of diodes and techniques in their manufacture; the types and modes of operation of bipolar transistors; and the basic principles of unipolar transistors and their difference with bipolar transistors. The second part talks about the kinds of integrated circuits and their future developments; amplifiers, including their fundamentals and different types; and the principles and categories of oscillators. The third part discusses the applications of solid-state devices; transistor parameters and equivalent circuits; and the fundamentals and applications of Boolean-algebra. The book is a good read for technicians and students who are about to enter or are currently in their final stages of their course, as well as those who have recently finished and would like to have their knowledge refreshed.