Screen resolution refers to the number of pixels displayed on a screen, typically represented as width x height. For example, a resolution of 1920 x 1080 means the screen has 1,920 pixels horizontally and 1,080 pixels vertically. Higher resolutions provide more detail and clarity, making images and text appear sharper. Common screen resolutions include HD (1280 x 720), Full HD (1920 x 1080), and 4K (3840 x 2160). The choice of resolution can affect the viewing experience, especially for activities like gaming, watching movies, or graphic design, where detail is crucial.