What performs the function of displaying the screen you see on a computer monitor?

The graphics or video card is responsible for generating and controlling the image displayed on a computer monitor. It processes data from the computer's CPU and converts it into a format that can be output to the display. This includes rendering images, videos, and graphics in a way that the monitor can present them visually.

While both liquid crystal displays and cathode ray tubes are types of displays that show the output, they do not perform the function of creating the images responsible for what you see on the screen. Instead, they act as the medium through which the images created by the graphics card are displayed. An image scanner, on the other hand, captures images and does not play a role in display output.

By performing its function, the graphics card enables more complex graphics processing, allowing for smoother visuals and rewarding experiences in gaming and multimedia applications.