Computer (After the Daleks)
A computer within an operational Dalek flying saucer was still running after the defeat of the 22nd century Dalek invasion. When Jenny Chaplin and David Campbell first made use of the docked saucer, David queried the computer about its capabilities and was about to ask it to locate Susan Foreman before she arrived. When the three were trapped inside with both Marcus Bray's force and an alien creature outside, Susan had the computer fire the saucer's turret to scare off the beast.
After Bray's collaboration with the Daleks was exposed, he retreated to the saucer and had the computer establish a link to the Dalek Fleet and broadcasted an invitation to reinvade. Following Bray's death, Susan repeated the command, her message warning the Daleks off. The computer reported however that neither message actually sent due to the saucer's damaged antenna. Susan subsequently ordered the computer to activate the saucer's self-destruct. (AUDIO: After the Daleks)