US D311728 S
FIG. 1 is a front elevation view of a central processing unit showing my new design;
FIG. 2 is a right side elevation view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a rear elevation view thereof;
FIG. 6 is a bottom plan view thereof; and
FIG. 7 is a top, front, right side perspective view thereof.