The video adapter card is an expansion card which usually sits on a slack on the motherboard. It acts as the interface between the processor and the monitor. It accepts the data from the processor through a communication channel called the bus, which connect to the slack. The card communicates with the monitor via the adapter cable through a 15pin connectors.The digital data required for creating an image on the screen is generated by the central processor of the computer and consists of RGB values for each pixel on the screen. These are called pixel attributes.

Earlier generation video cards can only passively transfer these data to the monitor and were called flat video cards. For example, the adapter card can handle movement of an object on the screen. For this involves changing existing pixel values, but to display a second object on the screen it needs to get additional data from the processor.

 

Due to this additional capability, the modern video card releases computing and load
from the processor can display changing scenarios the presence of a processor chip on the card itself.Thus, they are also referred to as accelerated video cards.

 

 

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