Visual devices are tools or techniques used to enhance the presentation of information through images, graphics, and other visual elements. They help to convey messages more effectively by making content more engaging and easier to understand. Common examples include charts, graphs, infographics, and diagrams. These devices are often employed in various fields such as education, marketing, and journalism to illustrate complex ideas or data. By using visual devices, creators can capture the audience's attention and facilitate better retention of information, making it a valuable strategy in communication.