USS Enterprise (NCC-1701) library computer

The library computer banks of USS Enterprise (NCC-1701) contained information from the Starfleet database.

In 2254, the library computer banks, including tapes and microrecords, were scanned by the Talosians. A large portion of Human history and Federation knowledge were assimilated. 

In 2265, Spock accessed the library computer to bring up biographical and psychological data on Gary Mitchell and Elizabeth Dehner after they began to experience mysterious ESP powers following an encounter with the galactic barrier. 

In 2268 the historical uniform section of the library computer was accessed for information relating to SS uniforms and insignia. The information allowed Leonard McCoy to be outfitted as a Gestapo Doctor, with the rank of Colonel, from Earth in 1944. McCoy then beamed down to the planet Ekos for a covert operation. 

In 2269, after Spock allowed himself to become inhabited by an unidentified cosmic cloud, Kirk requested that Uhura show the being, from the library computer, views of Earth, and what the cloud was capable of destroying.