Small Wonder

From Wikipedia:

Small Wonder is an American comedy science fiction sitcom that aired in first-run syndication from September 7, 1985 to May 20, 1989. The show chronicles the family of a robotics engineer who secretly creates a robot modeled after a human girl, then tries to pass it off as their adopted daughter.

The story lines revolve around V.I.C.I. (an acronym for Voice Input Child Identicant, pronounced "Vicky" or "Vicki"), an android in the form of a 10-year-old girl. V.I.C.I. was built by Ted Lawson, an engineer/inventor for United Robotronics, in an effort to assist handicapped children. The robot is taken home by Lawson so that it can mature within a family environment. V.I.C.I.'s features include superhuman strength and speed, an AC outlet under her right arm, a serial port under her left arm, and an access panel in her back. Despite this, the Lawson family initially tries to pass V.I.C.I. off as an orphaned family member whom they eventually legally adopt as their daughter.

The Lawson family tries to keep the robot's existence a secret, but their disagreeable neighbors, the Brindles, keep on popping up at the most unexpected moments — especially nosy next-door neighbor Harriet, whose father happens to be Ted Lawson's co-worker. The show's humor frequently derived from V.I.C.I.'s attempts to learn human behavior, the robot's literal interpretation of speech and the family's efforts to disguise the robot's true nature.

To explain child actress Tiffany Brissette's aging during the show, the series' producers had Ted give V.I.C.I. an upgrade in the series' third season. He aged her face, dressed her in modern clothes, and allowed her to eat and drink. The food passed through her naturally and the drink cooled her internal system.