When a key is pressed on the keyboard, which hardware interruptis executed?

IRQ1 interrupt

Explanation:  IRQ1 is the hardware interrupt request which is produced from the processor side mainly reserved for keyboard input . When a key  is pressed from the keyboard then a input get produced then there is a request from the main processor and this interrupt gets executed.There are some devices which do not have the keyboard still this interrupt is only preserved for it.

well cos like a ds it doesn't really die out, unlike for example, fifa, they always come out with a new version, so lets say your fifa 18 is charging you to update the teams and stuff, so, if messi were to go to real madrid (never gonna happen) it would switch messi to the other team, until the owners of fifa come out with fifa 19, then the game would eventually stop updating, and back to the ds, it doesn't really stop working after sometime because there's lots of things that it could be used for, and idk if u know what i'm saying, but long story short, samsung, represents the ds, if they still work, and people love them but not the new version, the old version still works, so they don't really force people to buy new phones, get me?