The goal of any technology is to create a useful product which is not readily available in nature by means of complex processing of material, information etc.Microelectronics is the science and technology of making very small electronic components and systems. In the last 60 years, microelectronic devices served as the foundation of the digital revolution which has affected all aspects of our modern life.Semiconductors can be considered as the brains of modern electronics, enabling advances in communications, computing, health care, defence, transportation, clean energy, and emerging technologies such as artificial intelligence (AI), virtual reality (VR), and the Internet of Things (IoT).