Ls Video What Are Video Cards And What Do They Do? Im Sooooo Confused Plzz Help?

What are video cards and what do they do? Im sooooo confused plzz help? - ls video

I need a T & L graphics card with at least 32 MB of video RAM. What is a graphics card, where the project. u see, and what it does. If I wanted a new graphics card Where can I buy a voucher? Any other information would be great! Thank you!