Multithreading in computer hardware is when the computer can do more than one thing at a time. Imagine you have two hands and you want to do two things at the same time - like coloring with one hand and playing with blocks with the other hand. Multithreading is like having two hands that can do two things at the same time!
Inside the computer, there are little workers called processors who do the work. And just like you have two hands, your computer can have more than one processor. When a computer has more than one processor, it can use multithreading to get more work done at the same time.
This means that while you are watching a funny video on YouTube, your computer can also be running other programs in the background - like downloading a movie or updating your antivirus - at the same time. It's like your little computer workers are doing multiple jobs all at once!
Multithreading helps make your computer faster and more efficient because it can handle more tasks at the same time. So next time you're using your computer, remember that it has little workers inside that can do more than one thing at a time thanks to multithreading!