Mr. Evans advised electrical engineering at the University of Utah and becoming a doctorate in physics. He again went to assignment at the Bendix Corporation, breadth he served as a activity administrator on two of the company’s computers, the G15, alien in 1955, and the G20, alien in 1961.
But Mr. Evans, accurately admiration that Bendix was not activity to accomplish in the computer industry, larboard to accompany the computer science administration at the University of California at Berkeley. He became the arch of the university’s assignment for the Pentagon’s Avant-garde Analysis Activity Agency, accepted as A.R.P.A. At that time, the bureau was allotment a ample ambit of basal analysis projects from which grew abounding of the key innovations of the avant-garde computer industry in claimed computing, networking and workstations.
At Berkeley, Mr. Evans and his acceptance fabricated advances in the breadth of basic memory, an important abstraction in computer science that allows the admeasurement of programs and abstracts files to beat the absolute anamnesis admeasurement of a computer.
He additionally led a accumulation of acceptance and advisers in the architecture of a computer that became accepted as the SDS 940. Brought to bazaar in the mid-1960’s by the Xerox Corporation, it was the aboriginal bartering time-sharing computer system, enabling a cardinal of computer users to accompanying use a distinct computer.
One of Mr. Evans’s best-known Berkeley acceptance was Butler Lampson, who became a avant-garde in the development of claimed computers and workstations at Xerox’s Palo Alto Analysis Center and the Digital Equipment Corporation.
While at Berkeley, Mr. Evans additionally met Mr. Sutherland, who had afresh become arch of A.R.P.A.’s Information Processing Techniques Office.
In 1965, James Fletcher, again admiral of the University of Utah, recruited Mr. Evans to move aback to Salt Lake City and actualize a computer science department.
Three years later, Mr. Evans recruited Mr. Sutherland to a adroitness position at Utah from Harvard, breadth afterwards abrogation A.R.P.A. he had been administering analysis in head-mounted affectation screens for aeroplane pilots and added applications.
It was in 1968, during a banquet chat while the two men were on a business consulting cruise in Phoenix, that they absitively to alpha Evans & Sutherland Computer alike while continuing the assignment at the university.
Mr. Sutherland said that Mr. Evans’s characteristic addition in computer cartoon was in the acumen that anniversary alone point in a computer angel — anniversary pixel — differs alone incrementally from the pixels adjoining to it. By accretion alone these differences, rather than creating an absolutely new pixel in anniversary instance, a computer can assets amazing amounts of processing ability and acceleration for the conception of added circuitous cartoon than would contrarily be possible.
He additionally led a accumulation alive on ”raster” computer cartoon — architecture images by accretion and announcement them an absolute accumbent awning band at a time — a accepted another to the ”vector” method, in which an cyberbanking axle scans an angel assimilate a awning abundant as a pencil draws a account on paper.
However, Mr. Evans’s greatest addition may accept been the actuality that at both Berkeley and Utah, he recruited and accomplished an amazing accumulation of alum acceptance who went on to groundbreaking careers in computing.
Among the best accepted of his above Utah acceptance are Alan Kay, who afterwards became the baton of a accumulation of advisers at Xerox’s Palo Alto Analysis Center accustomed with abounding of the account basal the avant-garde claimed computer industry; Jim Clark, a architect of Silicon Cartoon Inc., a maker of avant-garde workstations, and the Netscape Communications Corporation, the aggregation that aboriginal auspiciously commercialized the World Wide Web browser; John Warnock, a co-founder of Adobe Systems Inc., whose press software helped actualize the desktop publishing industry; Edwin Catmull, a computer cartoon avant-garde who co-founded Pixar, the computer action studio, and Alan Ashton co-founder of the Wordperfect Corporation.
”If you attending at the industry today and see breadth the account come, abounding of the best ones came from Dave,” said Mr. Kay, who is now a analysis scientist at the Walt Disney Corporation.
”All of us were misfits and backward bloomers,” Mr. Kay said of Mr. Evans’s above students. ”But if your resume looked at all interesting, he would let you in and accord you two years of support.”
Among Mr. Evans’s able ceremoniousness was the 1996 Computer World-Smithsonian Award for lifetime achievement.
He was an alive affiliate of the Church of the Latter Day Saints and a Boy Scout scoutmaster for 27 years, accepting the Silver Beaver, scouting’s accomplished account for developed leaders.
Mr. Evans is survived by his wife, Beverly Joy Frewin Evans, and by seven children: Anne Brown of Palo Alto, Calif.; Peter F. Evans, Gayle Gable and Katherine Orchard all of Salt Lake City; David F. Evans of Goya, Japan; Douglas F. Evans of Fort Collins, Tex., and Susan Foote of Flower Mound, Tex., as able-bodied as 39 grandchildren and great-grandchildren.
Correction: October 13, 1998, Tuesday An obituary on Monday about David C. Evans, a avant-garde in computer graphics, misstated his position in the computer science administration at the University of California at Berkeley in the 1960’s. He was a affiliate of the department, not chairman.
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