What is a CAD system?

A CAD system, or Computer-Aided Design system, is specifically designed for creating precise drawings and models in various fields such as engineering, architecture, and manufacturing. This technology facilitates the drafting and designing process, allowing users to create detailed plans and representations of objects in both 2D and 3D formats. CAD systems enhance accuracy, allow for easy modifications, and enable the simulation of real-world performance, making them invaluable tools in the design process.

The other options describe different functions or systems that are not the primary purpose of CAD. For instance, while project management systems are crucial for overseeing design projects, they do not focus on the actual creation of design plans or models like CAD does. Similarly, software for electrical circuit design refers to specific types of CAD applications tailored for electrical engineering, but it doesn't encompass the broader capabilities of a full CAD system. Finally, tools for measuring physical dimensions are related to the process of design and fabrication but don't cover the computerized aspect of drafting and modeling that defines CAD systems.