Charles Simonyi

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Charles Simonyi
Charles Simonyi
Birthday/Birthplace (1948-09-10) September 10, 1948
Budapest, Hungary
Citizenship Hungarian
Citizenship United States
College(s) University of California, Berkeley (B.S.)
Stanford University (Ph.D.)
Profession(s) Software architect
Credit for Hungarian notation, space tourism, style sheet (desktop publishing)
Cool work Microsoft Office
Net worth US$1.4 billion
Wife/Husband Lisa Persdotter (m. 2008)
Kid(s) 2
Space Adventures tourist
Time in space 26d 14h 27m
Missions Soyuz TMA-10 / TMA-9, Soyuz TMA-14 / TMA-13
Mission insignia

Charles Simonyi (in Hungarian Simonyi Károly); Born on September 10, 1948, he is a Hungarian software engineer who oversaw the creation of the Microsoft Office office suite, along with Richard Brodie, and currently runs his own company, Intentional Software, dedicated to the development and marketing of intentional programming. . In 2007 he became the fifth space tourist, the only one who has repeated so far and the second Hungarian in space. His fortune amounts to about one billion dollars.

Simonyi is the creator of the Hungarian notation, by Bravo, the first WYSIWYG computer application and a well-known philanthropist, sponsor of a chair at the University of Oxford, another at Stanford University and the Princeton Institute for Advanced Studies.


After completing her studies, Simonyi worked at Xerox PARC, in Palo Alto, California. There he developed the first word processor WYSIWYG, Bravo, for the Xerox Alto computer.

He was one of the first programmers hired directly by Bill Gates for Microsoft, where he developed Multiplan, the predecessor of the Microsoft Excel spreadsheet, the first version of the well-known Microsoft Word text processor for MS-DOS, in 1983. Later he dedicated himself to the development of the Office suite Microsoft Office.

While working at Microsoft, Simonyi introduced the object-oriented programming that was being developed at Xerox and developed the Hungarian notation convention for naming variables. Originally, this work was part of his doctoral thesis, and this notation has been widely used in Microsoft.

Despite being one of the most prestigious programmers within the company, Simonyi left Microsoft in 2002 and created, together with Gregor Kiczales, his own computer company, Intentional Software, which is dedicated to developing the call intentional programming that Simonyi himself helped develop in Microsoft Research.

Explanatory note : According to Andy Hertzfeld in his book Revolution in Silicon Valley, the Hungarian notation arose when Simonyi worked at Xerox PARC and not Microsoft.

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