Daniel Henry Holmes Ingalls, Jr.

Daniel Henry Holmes Ingalls, Jr.
Citizenship	United States
Fields	Computer Science
Institutions	Xerox PARC Apple Inc. ATG Interval Research Corporation Walt Disney Imagineering Hewlett-Packard Labs Sun Microsystems Labs SAP
Alma mater	Harvard University, Stanford University
Known for	Bit blit Pop-up menus Smalltalk object-oriented programming Fabrik visual programming language Lively Kernel
Notable awards	ACM Grace Murray Hopper Award ACM Software Systems Award

Daniel Henry Holmes Ingalls, Jr. is a pioneer of object-oriented computer programming and the principal architect, designer and implementor of five generations of Smalltalk environments. He designed the bytecoded virtual machine that made Smalltalk practical in 1976. He also invented Bit blit, the general-purpose graphical operation that underlies most bitmap graphics systems today, and pop-up menus. He designed the generalizations of BitBlt to arbitrary color depth, with built-in scaling, rotation, and anti-aliasing. His major contributions to the Squeak system include the original concept of a Smalltalk written in itself and made portable and efficient by a Smalltalk-to-C translator.

Education

Ingalls received his B.A. in Physics from Harvard University, and his M.S. in Electrical engineering from Stanford University. While working toward a Ph.D. at Stanford, he started a company, to sell a software measurement invention that he perfected and never returned to academia.

Work

Ingalls' first well known research was at Xerox PARC, where he began a lifelong research association with Alan Kay, and did his award winning work on Smalltalk. He then moved to Apple Inc. He left research for a time to run the family business, the Homestead Hotel, in Virginia. He then worked at Interval Research Corporation, and then returned to Apple. Starting at Xerox, and then at Apple, he developed Fabrik, a visual programming environment consisting of a kit of computational and user interface components that can be "wired" together to build new components and useful applications.

Then he moved to Hewlett-Packard Labs, where he developed a module architecture for Squeak. He also started and still operates a small firm, Weather Dimensions Inc., which displays local weather data on home computers.

Ingalls then worked as a Distinguished Engineer at Sun Microsystems, where he worked in the Sun Labs research wing. His latest project is a JavaScript environment called Lively Kernel, which allows live, interactive Web programming and objects from inside Web browsers.

While best known for his work on Smalltalk, Ingalls is also known for developing an optical character recognition system for Devanāgarī writing, which he did at the instigation of his father, Daniel H. H. Ingalls, Sr., a professor of Sanskrit.^[1]

He lives near the beach in Rio del Mar/Aptos, California with his wife Cathleen Galas, where he contributes to development of the Squeak implementation of Smalltalk, JavaScript research, and the Lively Kernel Project, which now resides at the Hasso Plattner Institute.

Ingalls has most recently moved to SAP Palo Alto Research Center, as a Fellow. He is a key member of the Chief Scientist team guiding the company’s technology vision, direction, and execution.

Awards

In 1984, Ingalls received the ACM Grace Murray Hopper Award for Outstanding Young Scientist, for his Xerox PARC research, including Bit blit.^[2] In 1987, with Alan Kay, and Adele Goldberg, he received the ACM Software System Award, for his work on Smalltalk, the first fully object-oriented software system.^[3] In 2002, he was co-recipient, with Adele Goldberg, of the Dr. Dobb's Excellence in Programming award.^[4]

Bibliography

• Dan Ingalls Bio biography on Squeak site^{[dead link]}
• FLOSS Weekly interview with Dan Ingalls
• Ingalls, Daniel (1975) Untitled interoffice memo of November 19, 1975, Xerox PARC.
• Ingalls, Daniel H.H. and Daniel H.H. Ingalls 1985: The Mahābhārata: Stylistic study, computer analysis and concordance. Journal of South Asian Literature 20:17-46.
• Ingalls, Daniel H. H. and Daniel H. H. Ingalls 1980: Video of joint lecture on Sanskrit OCR given at Xerox PARC in 1980.
• Wujastyk, D. (1988) Report on the Sanskrit Text Archive Conference Austin, Texas, October 28–29, 1988.
• Antero Taivalsaari, Tommi Mikkonen, Dan Ingalls and Krzysztof Palacz, "Web Browser as an Application Platform: The Lively Kernel Experience", Sun Labs, Report Number: TR-2008-175, Jan 30, 2008.

References

1. ^ "Sanskrit and OCR," lecture video, Xerox PARC, 1980.
2. ^ Grace Murray Hopper Award.
3. ^ ACM Software System Award.
4. ^ Dr. Dobb's Excellence in Programming Awards, May 1, 2002. Includes a biographical sketch.

External links

• [1] An interview of Dan at QCon London 2010
• Sanskrit and OCR A video of Dan and his father recorded at Xerox PARC April 17, 1980
• Dan Ingalls: Seven (give or take) Smalltalk implementations
• Dan Ingalls: Lecture on object-oriented programming video at archive.org
• Daniel Henry Holmes Ingalls, Jr. at the Open Directory Project
• Lively Kernel project page
• The Lively Kernel: A Self-Supporting System on a Web Page - video archive for the EE380 talk

Persondata
Name	Ingalls, Dan
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Date of birth	1944
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