How Vga workings step by step

When the application is run to create an image, the application will ask for help on the graphics card driver. Graphics driver will listen to instruction, from either the OS or the application, then take the necessary digital data and converts it into a format that is understood by the graphics card. After that, the driver of the new digital channel formatted data to the graphics for rendering. The data goes into the VGA card via the slot on the motherboard (AGP / PCI-E). Once delivered to the graphics card, the data will be sent to the graphics card memory as a temporary storage place. Then the GPU will take the digital data and convert it into pixels. At this point, the pixels are not ready to be displayed to the screen. Pixel will be sent back to the Video RAM to be stored. VRAM is directly connected to the RAMDAC in charge of translating the image into an analog signal to be used by the monitor. Furthermore, RAMDAC sends the final image to the monitor through the display interface, cable, up to the monitor.