A graphics card is a piece of technology that helps your computer show pictures and videos on your screen. You can think of it like a translator that takes all the information your computer needs to show a picture or a video and turns it into something your screen can understand.
To do that, a graphics card has its own memory and processing power. It receives information from your computer's central processing unit (CPU) and turns it into pixels on your screen. More powerful graphics cards can process more information and produce better pictures and videos.
Graphics cards are important for playing video games or doing other things that require a lot of graphics processing. Without a good graphics card, your games and videos might look choppy or pixelated.
Some computers come with built-in graphics cards, while others allow you to upgrade to a better one. When shopping for a graphics card, you will want to consider factors like how much memory it has, how powerful it is, and whether it will fit in your computer.