Select Display 3. Use the slider to select your desired resolution. Click on the apple icon at the top left of your screen 2. Click on the icon that looks like a monitor with a checkerboard on it.
Screen resolution refers to the dimensions of the pixels displayed on a monitor.
Many computers come preset to a resolution of 640 X 480 pixels. The size of the monitor does not determine the screen resolution. But the bigger the monitor, the bigger the screen resolution you can use. Viewing your screen, everything gets smaller as the resolution goes up. That's because the monitor is displaying a larger number of pixels in the same screen space.