What does AS400 stand for?

MLA style: "AS400." Acronym Finder . 2012. AcronymFinder.com 11 Feb. 2012 http://www.acronymfinder.com/Application-System-400-(IBM)-(AS400).html
Chicago style: Acronym Finder . S.v. "AS400." Retrieved February 11 2012 from http://www.acronymfinder.com/Application-System-400-(IBM)-(AS400).html
APA style: AS400. (n.d.) Acronym Finder. (2012). Retrieved February 11 2012 from http://www.acronymfinder.com/Application-System-400-(IBM)-(AS400).html

Application System 400 (IBM)

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