Computer application in engineering is reviewed from an historical viewpoint. Since 1965, a trend toward integrating computer programs into a design system has emerged. Such design systems are called “Computer-Aided Design (CAD)” systems. A similar trend in manufacturing is also now emerging. Advanced research and development work in the United States and abroad is directed toward capturing manufacturing logic to develop automated manufacturing systems, known as “Computer-Aided Manufacturing (CAM)” systems. It is projected that engineers of the 1970s will witness development of many CAD and CAM systems. It is also projected that a new trend to integrate CAD and CAM systems will emerge in the 1970s.