What are real-time or low-latency systems?

A real-time or low-latency system is one that acts super fast, almost like it can think and respond before you even finish blinking.

Imagine you're playing a game with your friend, every time you hit the ball, they catch it right away. That’s how a real-time system works: it gets information (like when you hit the ball) and responds instantly (like catching it).

Think of a conveyor belt in a factory that moves really fast, so fast that the items on it don’t even have time to slow down. That’s like a low-latency system: it handles tasks super quickly, without delays.

Now imagine a slower conveyor belt, the items take longer to move from one end to the other. That's more like a regular system: it takes time to process things.

In real life, this kind of speed is important for things like video games, phone calls, or even robots that need to react quickly. Without fast systems, everything would feel slow and laggy, like trying to play catch with someone who takes forever to move!