Can you believe this is quiz machine?

Well, it is indeed. A real one. The only fake thing here is a keyhole.

Let’s look inside:

4 contact pairs, 4 buttons, 3 batteries and jumbo green LED.

Here are quiz cards

Here is a card in a slot. You can see 3 pairs of contacts disconnected, and 1 pair connected.

Why?

I mean, what a weird project choice!

The answer is simple: it is Xenia’s school project. She was asked to build a quiz system, and she built one. I helped a bit, but she did the rest.