ELI5: Explain Like I'm 5

Delay-locked loop

Okay kiddo, do you remember the game of Hide and Seek? Well, imagine you are playing with your friends in a big house, and one friend has to hide and the others have to find them.

Now, let's pretend that the friend who is hiding is moving around the house really slowly, and the other friends have to keep track of where they are by counting to 10 seconds.

But what if the friend who is hiding starts moving faster or slower? Then the other friends will lose track of where they are, and the game will become frustrating.

This is kind of like how a Delay-Locked Loop (DLL) works. It helps computers keep track of time and synchronize signals.

The DLL has a special clock signal that helps it measure how much time has passed. It uses this clock signal to tell if other signals are coming in too fast or too slow. If another signal is coming in too fast or too slow, the DLL will adjust its clock signal to make everything line up again.

Just like your friends playing Hide and Seek, the DLL helps all the different signals in your computer "keep track" of each other, so they can work together smoothly and without any frustration!
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