I have great pleasure to present this book on Analog and Digital Device applications, F.Y.B.Sc. Electronic Science SEM-II,P-II. It is written as per the 2019 pattern, Choice Base Credit System (CBCS) syllabus of Savitribai Phule Pune University, Pune-411007.

The author have tried his level best to simplify the difficult concept in electronic science with neat diagram and simple mathematical equation. 

The basics of electronics which is required to understand the concept of Operational Amplifier is covered. The understanding of IC-555 as Astable Multivibrator is made very simple by drawing the diagrams. The applications of Operational Amplifier and IC-555 are made very simple.

The data converters such as Analog to Digital Converter (ADC) and Digital to Analog Converter (DAC) are explain very symmetrically. Digital thermometer with simple block diagram is explain. I thank to Publisher IIP Publishing House (IPH) www.iiponline.orgfor helping me to publish this book.