David Parnas
| David Parnas | |
|---|---|
 |
|
| Born |
February 10, 1941 Plattsburgh, New York, United States |
| Doctoral advisor |
Alan Perlis Everhard Mott Williams |
| Doctoral students |
Richard J. Lipton Steven M. Bellovin Denise Woit |
| Known for | Information hiding, Strategic Defense Initiative activism |
David Lorge Parnas (born February 10, 1941) is a Canadian early pioneer of software engineering, who developed the concept of information hiding in modular programming, which is an important element of object-oriented programming today. He is also noted for his advocacy of precise documentation.
Parnas earned his Ph.D. at Carnegie Mellon University in electrical engineering. Parnas also earned a professional engineering license in Canada and was one of the first to apply traditional engineering principles to software design. He worked there as a professor for many years. He also taught at the University of North Carolina at Chapel Hill (U.S.), the Technische Universität Darmstadt (Germany), the University of Victoria (British Columbia, Canada), Queen's University in Kingston, Ontario, McMaster University in Hamilton, Ontario, and University of Limerick (Republic of Ireland).
David Parnas received a number of awards and honors:
In modular design, his double dictum of high cohesion within modules and loose coupling between modules is fundamental to modular design in software. However, in Parnas's seminal 1972 paper On the Criteria to Be Used in Decomposing Systems into Modules, this dictum is expressed in terms of information hiding, and the terms cohesion and coupling are not used. He never used them.
...
Wikipedia