So, imagine you have a lot of toys in your room, but you also have a special box where you keep your favorite toys. The object manager in Windows is like that special box for your computer - it keeps track of all the important things your computer needs to run smoothly.
When you use your computer, you open and close different programs and files, just like you play with different toys. The object manager makes sure that every program and file has the space and resources it needs to work properly, so your computer doesn't get overwhelmed and crash.
It also helps your computer communicate with other devices, like printers or cameras, by making sure they're properly recognized and connected.
So, just like you need to take care of your toys and put them away properly, the object manager takes care of all the important things on your computer so everything runs smoothly.