Explain CAM software

CAD/CAM software has been recognized as an essential tool in the designing and manufacturing of a product due to its ability to depict the designs and tool paths with friendly visual displays and effects. There is no CAD/CAM package existing without visualization of the design of a product on the computer screen. Visualization embraces both image understanding and image synthesis. Thus, the visualization becomes one of the challenging tasks in computer graphics to generate images that appear realistic. The quest for visual realism began in the early 70s when memory prices dropped low enough  to allow raster scan technologies to be cost-effective over the then prevailing calligraphic displays. The need of visual realism is increasing forever in every discipline of science and engineering.