Dual screen refers to a setup that uses two separate display screens to enhance productivity and multitasking. This configuration allows users to view and interact with multiple applications or documents simultaneously, making it easier to compare information or work on different tasks without constantly switching between windows. Commonly used in both personal and professional environments, dual screens can be found in various devices, including laptops, desktops, and tablets. Many operating systems, such as Windows and macOS, support dual screen functionality, enabling users to extend their desktop or mirror their displays for presentations.