ET- Rewiring Speak and Spell

Gertie entered the closet with the monster. She picked up her Speak and Spell and pressed the letter B. What appeared on the display was a letter like none seen on earth before. And the voice that spoke from within the box no longer said the good old letter B. It said—blip.

  Or something like that, something very strange in any case, and the old computer wizard smiled his great, turtlish smile.

  “I wonder what’s wrong with my Speak and Spell,” said Gertie.

  “Nothing,” said the old being. His rearrangement of the signal was satisfactory; he’d broken the links in the chips and reprogrammed them with new vocabulary.
...

The inside of the Speak and Spell was exposed, its guts rewired, a few strands containing traces of raspberry jam. Instead of mechanic, nuisance, and other Earth words, the machine now said doop-doople, skiggle, and zlock, approximately, and much more no human ear could understand.

  The boys sat beside him. He demonstrated, pressing the buttons.

  “That’s your language, E.T.?”

  “E.T. phone home.” He pointed out the window of the closet.

- E.T. the Extra-Terrestrial in His Adventure on Earth, chapters 7 and 8