In this course emphasis would be on the Physics of semiconductor devices and the principles of their operation. The course would establish a solid understanding of electrical conduction in semiconductors. The main part of the course would focus on types of metal oxide semiconductor field effect transistors (MOSFETS) and metal oxide semiconductor field effect transistor (MOSFET) devices which are the main type of semiconductor devices on the market. The use of transistor devices and their design and optimisation for integrated circuit applications will be presented in detail. Nanoscale transistor dimensions and the effect of such dimensions on transistor behaviour will be presented. The physical limits to the scaling of CMOS devices will be discussed in detail.