What is the principle of the key on the keyboard?

Question

Keyboard

Hello, I have a question (don't ask why xD) how the closure works on the keyboard keys. What is this rubber gasket (what material) and how does it close the contacts?
And here's what you need to do, there is an ordinary button, and there is a keyboard. I need that when I press the button (closing the contacts of the button), the keyboard button is pressed.
That is, it will be enough to solder the button contacts to the Claudia board? Forgive me for the illiteracy of the question, but are there any nuances?

Answer 1

The computer keyboard consists of a microcontroller and a matrix of keys. Button presses are processed by the microcontroller, after which scan codes are generated, which are sent to the PC interface. Wikipedia
has written a lot about its device. en.wikipedia.org/wiki/File:FunctionalCircuitDiagra...

Answer 2

The keyboard itself is not interested! It is the mechanism of pressing the button, I wrote. Is it just that the contacts are closed by a membrane?