Video display controller
![Block diagram of a NEC µPD7220 graphics display controller](/Images/godic/202501/09/NECuPD7220BlockDiagram.svg1752.png")
![ATi R300 chip block diagram; the display controller is called](/Images/godic/202501/09/Radeon_R300_block_diagram.svg1752.png")
A video display controller or VDC is an integrated circuit which is the main component in a video signal generator, a device responsible for the production of a TV video signal in a computing or game system. Some VDCs also generate an audio signal, but that is not their main function.