FIG. 1 is a perspective view of the combined power exhaust stack and computer showing my design;

FIG. 2 is a first side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is an opposing side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a rear view; and,

FIG. 7 is a bottom view.

The broken line drawing of the stepped junction and details on the front of the computer are for illustrative purposes only and form no part of the claimed design.