A computer monitor is an output device that displays visual information generated by a computer. It allows users to see text, images, and videos, making it essential for tasks like browsing the internet, working on documents, or playing games. Monitors come in various sizes and resolutions, with common types including LCD (Liquid Crystal Display) and LED (Light Emitting Diode) screens. Monitors connect to computers using cables such as HDMI (High-Definition Multimedia Interface) or VGA (Video Graphics Array). They often feature adjustable settings for brightness, contrast, and color balance, enhancing the viewing experience. Some monitors also include built-in speakers and USB ports for added functionality.