[ELI5] How does a rice cooker “know” the timing to switch from cook to warm when there’s no more water in it?

Question

[ELI5] How does a rice cooker “know” the timing to switch from cook to warm when there’s no more water in it?

In: 825

Answer 1

Husband bought one when he was into rice.. I didn’t think we needed it. We ended up throwing it out, because it always scorched. Was it a bad one? I just make it on the stove & keep an half an eye on it. Comes out just fine.