Keyboard - top row - not working correctly
I have an IMac computer, version IOS 10.8.5, and the top row on my wireless keyboard - numbers and characters - is not working properly. I get what appear to be Greek characters and symbols. I have attached a different keyboard with number pad and can get the correct numbers but have no way of getting the punctuation marks.
This is what I get when depressing numbers from left to right: ăâêồ ̉~´ ̣đ-₫ĂÂÊỒ ̉~´ ̣Đ_+.
iMac, OS X Mountain Lion (10.8.5)