Features and consequences of the electronic band structure: electron and hole carriers, effective mass, carrier mobility, direct and indirect band gaps, generation and recombination processes, the Hall effect and its applications. Sources of semiconductor noise. Quantitative theory of PN junction devices; space charge capacitance, diffusion capacitance and switching effects. Heterostructures, the metal-semiconductor barrier, ohmic contacts. Basic construction and characteristics of field-effect transistors (JFET and MOSFET); biasing circuits and Q-point selection. Introduction to FET and BJT (hybrid-pi) small signal models, low frequency analysis of small signal amplifiers, regulated power supplies.