Centrino is a special name for a computer technology created by a company called Intel. It helps make your computer work better when you're not at home or near a really strong Wi-Fi signal.
Imagine you have a toy car that you love to play with. You can play with it at home, but if you go outside to the park or to your friend's house, it might not work as well because it needs batteries. Intel Centrino is like a really powerful battery for your computer, but instead of powering the car, it helps your computer connect to the internet wirelessly.
This technology also makes your computer use less power, so your battery lasts longer. That's like having a toy car that can run for a really long time without running out of battery.
So, in summary, Centrino is a cool technology that helps your computer connect to Wi-Fi and use less power, making it easier to use on the go!