key·board /ˈkiˌbord, ˌbɔrd/
Key·board n. The whole arrangement, or one range, of the keys3 of an organ, piano, typewriter, etc.; that part of a device containing the keys3 used to operate it.
n 1: device consisting of a set of keys on a piano or organ or
typewriter or typesetting machine or computer or the
2: holder consisting of an arrangement of hooks on which keys
or locks can be hung