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 such as browsing the internet, working on documents, and playing games. Monitors come in various sizes and resolutions, with common types including LCD and LED displays. Monitors connect to computers using cables like HDMI or VGA. They can also have features such as adjustable brightness, contrast settings, and built-in speakers. The quality of a monitor can significantly affect the overall computing experience, influencing clarity and color accuracy.