The main way to tell which expansion card is the video card is to look at the plug. If it has a VGA socket, a display port socket, HDMI, etc., then you will know it is a video card. You may identify some of the chips on the card as being RAM, or you might find a fan on it, but these features are not exclusive to video cards. If that is the place where you plug your monitor, then it is a video card, unless of course you are plugging directly into the motherboard.
A video card many times will be the top card, that being the card nearest to the inputs such as USB, sound jacks and PS/2 ports. Usually this slot is an AGP or PCI Express slot.
But not always. A surefire way to find the video card is to check for a DVI/VGA output on the card. That is almost always the video card. Usually a video card will have an active fan on it as well with a larger heat sink.
It'll be the only one with 3 rows of holes in the socket,,normally in the form of a "D"
AGP Video card AGP retention mechanism = AGP Video expansion card
System Unit
Video Card
An AGP video card.
yes, its what enables the video card to be attached to the motherboard if I understand your question right
A video card or video adapter translates binary data into images.
Video Card.
Video Card.
it lets you add a sound,video card, wifi card ,things of that nature
An integrated video card is "integrated" into the motherboard. That means the motherboard has a video card built in. A "discrete" video card means that you have a separate video card, one that typically plugs in to one of the expansion slots.
Expansion Slot is just like port into which expansion card can be inserted. In otherwords port is female and card is male.
pci express or AGP