Digital piggy bank

FIG. 1 is a front, top, right side perspective view of a digital piggy bank showing our new design;

FIG. 2 is a rear, bottom, left side perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a right side view thereof; and,

FIG. 8 is a left side view thereof.

The broken lines shown in the drawings illustrate portions of the digital piggy bank that form no part of the claimed design.