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The concept of the graphical user interface was developed by the Xerox Corporation in the 1970s, was popularized with the Apple Macintosh computers in the 1980s, and is now available on most types of computer most notably as Windows, an operating system for IBM PC-compatible microcomputers developed by the software company Microsoft.
Yellow represents sunshine, warmth, and wisdom. Green symbolizes the lush vegetation and agriculture. Effective date: 7 February 1974.
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