Semiconductor basics (intrinsic and extrinsic semiconductors, n-type and p-type semiconductors, pn junction, pn junctions under reverse and forward bias, I/V characteristics, pn junction as a diode). Applications of diodes (half-wave and full-wave rectifiers, limiting and clamping circuits, voltage doublers, level shifters). Special purpose diodes (Zener diodes and applications, varactors, photodiodes, LEDs). Bipolar junction transistors-BJTs (device structure and operation of BJTs, Bipolar transistor models and characteristics, the BJT as an amplifier and as a switch, logic gates, the pnp transistor). Bipolar transistor biasing circuits (operating point analysis, simple biasing, resistive divider biasing, self biased stage). Bipolar small signal amplifiers (small signal models, common-emitter amplifier, common-emitter amplifier with emitter resistance, common-collector amplifier, common-base amplifier). Frequency response of the common-emitter amplifier (the high frequency model, high frequency response, low frequency response). Field effect transistors-FETs (the junction FET, jFET characteristics and models, biasing of the jFET, the MOSFET, MOSFET characterisitcs and models, biasing of the MOSFET). Small signal FET amplifiers (small signal operation of the FET, the common-source (CS) amplifier, the common-gate (CG) amplifier, the common-drain or source-follower amplifier, frequency response of FET amplifiers).Thyristors and other devices (the shockley diode, the SRC, diac and triac, unijunction transistor, phototransistor, LASER).