Electron devices as two and four terminal devices, their current-voltage characteristics. Small signal parameters of two and four terminal devices and corresponding equivalent circuits. Electron energy spectrum of solids, their division in metals, dielectrics and semiconductors. Intrinsic semiconductors and semiconductors with impurities. Electron statistics in semiconductors. P-n junction, its equilibrium and non-equilibrium properties. Heterojunction and contact metal-semiconductor. Rectifier, p-i-n, high frequency, pulse, tunnel, reverse, Zener, variable capacitance and Schottky diodes. Bipolar junction transistors, thyristors, field effect transistors and charge coupled devices. Structure, operation principles, current-voltage characteristics, parameters, mathematical models, advantages and drawbacks of devices considered. Influence of temperature on operation of electron devices.