Interocitor

An interocitor is a fictional multi-functional device that first appeared in the 1949 story "The Alien Machine", which became the beginning four chapters of the 1952 novel This Island Earth, which in turn was made into the 1955 science fiction film This Island Earth. The device arrives in kit form as an intelligence test for scientists who might prove helpful to an alien race.

An interocitor is an alien device with unusual and strange properties. The concept was invented by science fiction writer Raymond F. Jones, who wrote the original novel This Island Earth beginning as a series of three sci-fi short stories now known as "The Peace Engineers Trilogy" appearing in the sci-fi pulp magazine Thrilling Wonder Stories from 1949 to 1951. Raymond F. Jones then did a novelization of the complete story into full book form and it was first published in 1952 by Shasta Press. Universal Studios purchased the screen rights to the novel in 1953, since the novel was a popular sci-fi best seller, and made it into a Technicolor film in 1954, which was then released on June 1, 1955. The film was a modest success and has somewhat impressive visual effects. The first third of the trilogy of stories was titled "The Alien Machine," referring to the Interocitor, with original graphic artwork penned by sci-fi artist Virgil Finlay. The story was sold to the press with the help of literary agent Forrest J. Ackerman.

The term interocitor itself, rather than referring to a specific device, likely refers to a general class of devices that share a common set of operating principles (similar to the term computer). This is inferred from the fact an interocitor is observed or described in many different roles:

In the film, advanced physicist Cal Meacham first becomes aware of an interocitor when a book arrives at his lab titled Electronic Service, Unit #16. Inside is contained a bill of materials for the interocitor, describing it as, "incorporating greater advances than hitherto known in the field of electronics." From the specifications, Meacham opines, "There's no limit to what it could do. Laying a four-lane highway at the rate of a mile a minute would be a cinch."

Of the 2486 components comprising an interocitor, only three are mentioned by name in the film:

...
Wikipedia