We will learn the basic concept of AC and DC citcuits.How current and voltage polarity is assigned.How AC and DC circuits respond to different Loads Resistance Inductance and Capacitance.Fundamentals of diode circuits will be covered where forward biasing and reverse biasing of diodes and diodes characteristics will be studied.How to approach problems based on concept and visualization will be discussed. Identification of elements in series and parallel arrangement and techniques to find out will be defined in a very lucid and practicle way. Star and delta network solution and voltage division and current division will be explained.The concept of nodal analysis and mesh analysis will be described.The dependent and independent source concept will be delivered.Moreover the fundamental logic gates and bollean algebra and upto 4 variable karnaugh map will be explained.At the end of this course student will have a clear knowlege of impedance power factors Phasors and fundamental digital gates.2