General Motors Research Laboratories
division of General Motors Corporation

General Motors Research Laboratories are the part of General Motors responsible for creation of the first known operating system (GM-NAA I/O) in 1955 and contributed to the first mechanical heart, the Dodrill-GMR, successfully used while performing open heart surgery.
See also
Multiple Console Time Sharing System
References
External links
General Motors Research Laboratories site. Domain is one of the first .com domains.
Facts
First true operating systems (mid-1950s)
GM-NAA I/O (1956)
Developed by General Motors Research for IBM computers
First real operating system (batch processing).
The public source identifies “General Motors Research Laboratories” as division of General Motors Corporation. This brief keeps that definition visible, then builds a research path around General, Motors and Research.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Jan 24, 2026. The linked authority identifier is Q5532052. VIAF identifies the subject as 128993515. The Library of Congress control number is n79084006. 1 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1955 and 1956.
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This entry incorporates text from “General Motors Research Laboratories” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.