A graphics system is a combination of hardware and software that enables the creation, manipulation, and display of visual images on a computer. It includes components like the graphics processing unit (GPU), which performs complex calculations to render images, and display devices such as monitors or projectors that present these images to users. Graphics systems are essential in various applications, including video games, computer-aided design (CAD), and virtual reality (VR). They allow users to interact with visual content in real-time, enhancing experiences in entertainment, education, and professional fields.