Trygve Reenskaug
Reenskaug in 2010
Born	Trygve Mikkjel Heyerdahl Reenskaug (1930-06-21)21 June 1930
Died	14 June 2024(2024-06-14) (aged 93)
Nationality	Norwegian
Known for	Model–view–controller,Object Oriented Role Analysis and Modeling, personal programming
Scientific career
Fields	Computer science
Institutions	Sentralinstitutt for industriell forskning,Xerox PARC,TaskonUniversity of Oslo
Website	folk.universitetetioslo.no/trygver

Trygve Mikkjel Heyerdahl Reenskaug (21 June 1930 – 14 June 2024) was a Norwegian computer scientist and professor emeritus of theUniversity of Oslo.^[1] He formulated themodel–view–controller (MVC) pattern forgraphical user interface (GUI) software design in 1979 while visiting theXeroxPalo Alto Research Center (PARC). His first major software project, "Autokon," produced a successfulcomputer-aided design –computer-aided manufacturing (CAD/CAM) program which was first used in 1963, and continued in use by shipyards worldwide for more than 30 years.

Reenskaug described his earlySmalltalk andobject-oriented programming conceptual efforts as follows:^[2]

MVC was conceived as a general solution to the problem of users controlling a large and complex data set. The hardest part was to hit upon good names for the different architectural components. Model-View-Editor was the first set. After long discussions, particularly withAdele Goldberg, we ended with the terms Model-View-Controller.

Reenskaug was extensively involved in research into object-oriented methods and developed theObject Oriented Role Analysis and Modeling (OOram) and the OOram tool in 1983. He founded the information technology companyTaskon in 1986, which developed tools based on OOram. The OOram ideas matured and evolved substantially into the BabyUML project, which culminated in creating thedata, context and interaction (DCI) paradigm.

Reenskaug wrote the bookWorking With Objects: The OOram Software Engineering Method with co-authors Per Wold and Odd Arild Lehne.^[3]Later he wrote avirtual machine forUnified Modeling Language (UML). As of 2005^[update], he wasprofessor emeritus of informatics at theUniversity of Oslo.

Reenskaug died on 14 June 2024, at the age of 93.^[4]

• Official website
• Reenskaug, Trygve; et al."Selected publications and books since 1970".Universitetet i Oslo.
• Reenskaug, Trygve; Lehne, Odd Arild (1996)."OOPSLA '96 Tutorial Descriptions: Tutorial 25: Working with Objects: Use and Reuse with Role Model Analysis and Synthesis".Special Interest Group on Programming Languages.
• Rupp, N. Alex (11 December 2003)."Part One: History of the MVC Pattern".Java.net. Archived fromthe original on 29 May 2007. (Part of an article entitled: "Beyond MVC: A new look at the Servlet Infrastructure")
• List of publications by Trygve Reenskaug inCRIStin

• 1930 births
• 2024 deaths
• Human–computer interaction researchers
• Programming language designers
• Norwegian computer programmers
• 20th-century Norwegian scientists
• 21st-century Norwegian scientists
• Norwegian computer scientists
• Norwegian company founders
• Scientists at PARC (company)

• Articles with short description
• Short description matches Wikidata
• Use dmy dates from June 2024
• Articles with hCards
• Articles containing potentially dated statements from 2005
• All articles containing potentially dated statements
• Official website different in Wikidata and Wikipedia