My five-year old Acer laptop inexplicably has a Euro key to one side of the "Up" arrow, and a superfluous "$" key to the other side. I've certainly pressed eac

My five-year old Acer laptop inexplicably has a Euro key to one side of the "Up" arrow, and a superfluous "$" key to the other side. I've certainly pressed each of those keys numerous times unintentionally, and cursed the keyboard designer ... but I can't remember a single time in five years that I've pressed one intentionally.