Microcontroller has been a heart of all electronic products. In this book, a design and development work has been presented where microcontroller has been used to construct a large electronic display board. The designed board is also controlled from remote locations through LAN. This book contains all the algorithms needed to implement the project. Besides, fundamental of Microcontroller and Networking has been described elaborately. This book would be a best guide for them who is the beginner in the field of microcontroller based embedded system design as well as network based controlled system design.