" Greetings crewman, I am the ship's computer, Destiny. Just ask for me by name if you wish to interact, and my hologram shall appear. "

Destiny Class Artificial Intelligence

Appears most often as a Terran female, but can have image altered if needs be.
Fully interactive, and can perform skills of any junior officer in case of an emergency. Also has access to Starfleet Database, and can uplink on its own.