Yeah, Drakino is right, it's built into the keyboard.

Yes, it's software that's doing all the work, but it's software running in ROM chips on the keyboard itself.

Clearly you haven't had the wonderful experience of being tech support for a department which just got a shipment of Gateways with AnyKey keyboards. From day one, everybody began having trouble with the keyboards. "My keyboard doesn't work" was a daily problem. Everyone was accidentally hitting the Macro key as they reached for their morning coffee.

I hate those keyboards.