This course is designed to follow 18-311, which provides an introduction to the physics of semiconductor devices. 18-412 addresses in detail the physics and technology of semiconductor devices which work on the field effect principle. These devices include the MOSFET, junction field effect devices (JFET and MESFETs), thin film field effect transistors (TFTs), and related devices. The course material is specifically motivated by current applications in which portable and low power operation is required. Particular applications, which are discussed in detail, include scaled MOSFETs for logic and memory; CCD imagers; active matrix flat panel displays; and MESFETs for digital and RF applications. This course will be particularly valuable for students interested in semiconductor device technology (including device physics and integrated circuit process technology) and analog/RF or aggressive digital circuit design. 3 hrs. lecture.