Which device is primarily responsible for displaying the visual output from a computer?

The monitor is the device primarily responsible for displaying the visual output from a computer. Its main function is to take the graphical data processed by the computer's GPU (Graphics Processing Unit) and visually represent it on the screen, allowing users to see the user interface, images, videos, and other graphical content. Monitors come in various types, including LCD, LED, and OLED, and they vary in size and resolution, but their essential role remains the same: to provide a visual output.

In contrast, a printer outputs information on paper, a keyboard is an input device used for typing commands, and a microphone captures sound input. Each of these devices serves a different purpose in the computer ecosystem, but none are designed to display visual output as the monitor does.