Its name comes from Dubna, a town near Moscow, where it was produced on the "TENSOR" instrument factory, and "48K" stands for 48 KBs of RAM.

The Dubna 48K had only a built-in BASIC interpreter, and loaded its programs from a cassette recorder, so it couldn't run any of the modern operating systems.

[6] The Dubna 48K was shipped with the following units: Additionally, there were some optional items: The computer could also connect to a ZX Microdrive, but such device was never included.

[6] In the film, rogue agent Nicky Parsons uses a "palm-sized authentication device" named Dubna 48K to get connected to the mainframe computer of the Central Intelligence Agency (CIA).

The film also does not point out that the real Dubna 48K was a Soviet home computer which was primarily used to play ports of video games.