What component controls the signals sent from the computer to the monitor?

The component responsible for controlling the signals sent from the computer to the monitor is the graphics card. The graphics card, also known as a video card, processes and renders images, videos, and animations that are displayed on the monitor. It translates the data from the computer's CPU into a format that the monitor can understand, ensuring that what you see on the screen is generated accurately based on the commands and data from your system.

The graphics card handles various functions such as rendering 3D graphics, managing resolutions, and implementing graphical effects. It is specifically designed for this purpose, making it a crucial part of the computer's visual output.

Other components like the power supply, motherboard, and cooling fan have different roles within the computer. The power supply provides electricity to all components, the motherboard connects and communicates between all hardware parts, and the cooling fan helps maintain optimal temperatures but does not play a direct role in processing or transmitting visual data. This distinction highlights the specialized function of the graphics card in managing signal output to the monitor.