An analog circuit refers to a type of electronic circuit that can process any analog data or signal, and generates an output in analog form. These circuits are made up of various devices including capacitors, operational amplifiers, resistors and inductors. Analog circuits work with signals that can range from zero to the maximum power supply voltage. Such circuits have the ability to isolate, attenuate, change, amplify, distort or even convert the original signal to a digital signal. An electronic circuit that processes digital signals is known as a digital circuit. The basic components used in digital circuits include diodes, gates, flip flops and transistors. Both analog and digital circuits are used to process and transmit information such as sound and light from their surroundings in order to create continuous changeable signals. This book elucidates the concepts and innovative models around prospective developments with respect to analog and digital circuits. Researchers and students interested in the study of integrated electronics will be greatly assisted by it.