Data buffer

A data buffer is like a container that helps hold some information for a short while before passing it on to another place or process. Think of it like a backpack you use to carry your things around before putting them away in a closet. Just like how you temporarily keep your things in a backpack, a data buffer holds temporary information before passing it on to where it needs to go. And just like how you can only carry a certain amount of things in your backpack at one time, data buffers can only hold a certain amount of information before needing to pass it on.