FIG. 1 is a front elevational view of a keyboard showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof, a right side elevational view thereof being a mirror image;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front top right perspective view thereof;

FIG. 7 is a rear bottom left perspective view thereof; and,

FIG. 8 is a reduced front elevational view thereof, showing a using condition.

The broken line showing of the environment are for illustrative purposes only and forms no part of the claimed design.