Computer Engineering covers a broad range of applications and overlaps with other fields, including materials science, electrical electronics, vehicles, physics, and statistics. This book provides insights into a few computer engineering applications in electronics, and in the medical and the automotive fields where advances in robotics, embedded systems, and sensors are creating a bold future. The chapters are written from the perspectives of scientists and engineering consultants who have broad experiences across multiple vendors and manufacturers of computer systems. Their unique perspectives are formed from work on consumer products including research, development, safety, legal compliance, and standards for products. Chapter 1 - In this chapter, we explore the transformative impact of miniaturization, Artificial Intelligence, and wireless technology on consumer products, which has given rise to a diverse range of wearable electronic devices. We delve into the evolution, current status, and forthcoming trends in this field, emphasizing key features, potential pitfalls, and crucial safety considerations.