Ivan Sutherland is an American computer scientist known as one of the pioneers of computer graphics. He created the first graphical user interface and developed the groundbreaking program Sketchpad in 1963, which allowed users to draw on a computer screen using a light pen. This innovation laid the foundation for modern computer-aided design and graphical interfaces. Sutherland's work has significantly influenced various fields, including virtual reality and augmented reality. He has received numerous awards for his contributions, including the Turing Award in 1988. His research continues to inspire advancements in technology and computer science today.