We claim the ornamental design for a computing device, as shown and described.
FIG. 1 is a front perspective view of a computing device;
FIG. 2 is an enlarged fragmentary section of the front perspective view thereof as indicated by item 2 in FIG. 1;
FIG. 3 is a front view thereof;
FIG. 4 is a cross-sectional view thereof taken along line 4-4 of FIG. 3;
FIG. 5 is a front perspective view of another implementation of the computing device thereof;
FIG. 6 is an enlarged fragmentary section of the front perspective view thereof as indicated by item 6 in FIG. 5;
FIG. 7 is a front view thereof; and,
FIG. 8 is a cross-sectional view thereof taken along line 8-8 in FIG. 7.
The broken lines in the drawings are shown for environment only and form no part of the claimed design. The short-dash, long-dash lines are boundary lines and form no part of the claimed design.