Keyboard

FIG. 1 is a top, front-side perspective view of a keyboard showing our new design;

FIG. 2 is a top, back-side perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front side elevation view thereof;

FIG. 6 is a back side elevation view thereof;

FIG. 7 is a left side elevation view thereof; and,

FIG. 8 is a right side elevation view thereof.

The broken lines show portions of the keyboard that form no part of the claimed design.