Okay kiddo, so you know how when you talk to someone, you want them to hear you clearly and understand what you are saying, right?
Well, in the same way, when computers and other electronic devices talk to each other using things called signals, they also need to be understood clearly so that they can do their jobs properly.
Signal integrity means making sure that these signals are clear and strong enough to be understood by the devices they are communicating with.
Think of it like a phone call. If you have a bad signal, your voice might sound all crackly and the person on the other end might not be able to understand what you are saying. But if the signal is strong and clear, they can hear you perfectly.
So, signal integrity is like making sure that these electronic signals are strong and clear enough so that the devices they connect to can understand them clearly and do their jobs properly.