This lecture covers the development and applications of organic transistor-based systems, focusing on large area electronics, biocompatible devices, and nano-electric interfaces. The instructor discusses the advantages and limitations of organic transistors compared to silicon counterparts, showcasing examples such as flexible OLED displays, organic RF tags, and thin-film solar cells. The lecture also explores the design and implementation of innovative systems like electronic skin for pressure sensing, thin Braille displays, and wireless power transmission sheets. Emphasis is placed on the potential of organic electronics in various fields, including healthcare, robotics, and IoT applications.