CAD (Computer-Aided Design), its origin can be traced back to the late 1950s, when with the preliminary development and application of Computer technology, people began to try to use computers to process graphics and data to aid engineering design and drawing.

Computer aided design (CAD) is a method of digitally creating 2D drawings and 3D models of real products prior to actual production. With 3D CAD, you can easily share, view, simulate, and modify designs, opening the door to innovative and differentiated products that can be brought to market quickly.

The origins of CAD can be traced back to the 1950s, when with the initial development of computer technology, people began to explore the application of computers in drawing and design. The earliest CAD systems were primarily used for two-dimensional drawing and were often limited by the computing power and storage capacity of computers at the time.

In the 1960s, with advances in computer hardware and software, CAD systems began to have more powerful capabilities, including the ability to edit, zoom, rotate, and save drawings. During this period, CAD gradually expanded from a few fields such as military and aerospace to other industries.

In the 1970s and 1980s, CAD technology ushered in rapid development. Three-dimensional CAD systems are beginning to emerge, allowing designers to create more complex and realistic models. At the same time, CAD has become more tightly integrated with other engineering software (such as CAM, CAE), improving the overall efficiency of design to production.

Today, CAD technology has been widely used in various fields, including construction, machinery, electronics, automobiles, shipbuilding and so on. CAD software has become one of the indispensable tools for designers and engineers.