- Star Trek: The Motion Picture
- Star Trek II: The Wrath of Khan
- Star Trek III: The Search for Spock
- Star Trek IV: The Voyage Home
- Star Trek V: The Final Frontier
- Star Trek VI: The Undiscovered Country
- Star Trek Generations
Electronic component that is the basis of most twenty-third century Starfleet equipment. Dr. McCoy left a communicator on planet Sigma Iotia II in 2268, raising fears that the natives would use it to determine how the transtator functions.