A computer monitor is an output device that displays visual information from a computer. It allows users to see text, images, and videos, making it essential for tasks like browsing the internet, gaming, and graphic design. Monitors come in various sizes and resolutions, affecting the clarity and detail of the images displayed. Most monitors use technologies like LCD (Liquid Crystal Display) or LED (Light Emitting Diode) to produce images. They connect to computers via cables such as HDMI or VGA. Monitors can also have features like adjustable stands and built-in speakers for enhanced usability.