A monitor is a visual display device that presents information or data generated by a computer. It is commonly referred to as a screen or display and is an essential component of a computer system. Monitors come in various sizes, resolutions, and types, such as LCD, LED, or OLED. They provide a visual interface for users to interact with the computer, displaying images, videos, text, and graphical user interfaces (GUIs). With their ability to showcase vibrant colors and sharp details, monitors enhance the overall computing experience and serve as a primary output device for users to view and interact with digital content.