-\centerline{\includegraphics<1>[width=10cm]{cpucomplete}
-\includegraphics<2>[width=10cm]{cpualu}
-\includegraphics<3>[height=6cm]{cpuregisters}}
+\centerline{\includegraphics<1>[width=10.3cm]{cpucomplete}
+\includegraphics<2>[width=11.3cm]{cpualu}
+\includegraphics<3>[height=6.3cm]{cpuregisters}}