Which card is responsible for converting video signals into a format that can be displayed on a monitor?

The video card, also known as a graphics adapter, plays a crucial role in converting video signals into a format that can be displayed on a monitor. This conversion process involves rendering images and graphics by processing data from the computer's operating system and applications. The video card takes this information and generates the appropriate signals needed to display content on the monitor, ensuring that visuals are presented at the correct resolution, color depth, and refresh rate.

Video cards contain specialized hardware, including a Graphics Processing Unit (GPU), which is designed to handle complex calculations required for rendering images efficiently. They can manage multiple video outputs, allowing users to connect various types of monitors or displays. Additionally, video cards often support advanced graphical features and effects, enhancing the overall visual experience.

Understanding the function of a video card is essential, as it directly impacts the quality and performance of visual tasks such as gaming, video editing, and graphic design. In contrast, the other options do not primarily focus on this role. A video capture card is designed for capturing video from external sources rather than displaying it, a TV capture card specifically targets television signals, and a sound/audio card is focused on processing audio signals rather than video.