page_title: Elektronika MK-52
section_title: Error message
hierarchical_section_title: Elektronika MK-52 / Additional information / Error message
caption_attribution_description: English: Elektronika MK-52 with an ERROR message
context_page_description: The Elektronika MK-52 is an RPN-programmable calculator manufactured in the Soviet Union during the years 1983 to 1992. It belongs to the third generation of Soviet programmable calculators. Its original selling price was 115 rubles.
  The functionality of the MK-52 is identical to that of the Elektronika MK-61, except that the MK-52 has an internal non-volatile EEPROM memory module for permanent data storage, a diagnostic slot, and a slot for ROM modules. The programming language and functionality of the MK-52 and MK-61 calculators were extensions of the earlier MK-54, B3-34, and B3-21 Elektronika calculators. The MK-52 is the only calculator known to have internal storage in the form of an EEPROM module.
  As with many Soviet calculators, the MK-52 has a number of undocumented functions. In November 1988, the MK-52 went into space on the Soyuz TM-7 spacecraft, where it could have been used to calculate the trajectory of landing in the event of an onboard computer failure.
context_section_description: When an error was encountered on the machine, the display produced a message similar to the English word "error". The word, written in this fashion, cut down on the number of display segments used to display the error message. In Russian, this spelling is not pronounced "error", but "eggog".
caption: MK-52 displaying ЕГГОГ
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