Keyboard

FIG. 1 is a perspective view of a keyboard showing the claimed design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is an enlarged view of the portion encircled in FIG. 1 .

The evenly dashed broken lines in the figures depict portions of the keyboard that form no part of the claimed design. The dot-dot-dash broken lines depict an area of enlargement.