Starswarm (Jupiter) by Jerry Pournelle
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(The fifth book in the Jupiter series)

A novel by
Jerry Pournelle

Kip has a secret. A young boy who lives with his uncle at the remote Starswarm Station, Kip has heard a voice in his head for as long as he can remember. The voice, an artificial intelligence chip implanted in his skull, guides him in all his decisions, helping out with useful information and insight. When Kip finally discovers the truth behind who put the chip there and why, he is suddenly confronted with a powerful revelation that may put his own life and the whole outpost in grave danger.