The development of QuickDraw has progressed along these three main evolutionary stages:
The development of QuickDraw has progressed along these three main evolutionary stages:
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* Basic QuickDraw, which was designed for the earliest Macintosh models with their built-in black-and-white screens. System 7 added new capabilities to basic QuickDraw, including support for offscreen graphics worlds and the extended version 2 picture format. Basic QuickDraw is still used in more recent black-and-white Macintosh systems such as the Macintosh Classic¨ and PowerBook 100 computers.
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* Basic QuickDraw, which was designed for the earliest Macintosh models with their built-in black-and-white screens. System 7 added new capabilities to basic QuickDraw, including support for offscreen graphics worlds and the extended version 2 picture format. Basic QuickDraw is still used in more recent black-and-white Macintosh systems such as the Macintosh Classic and PowerBook 100 computers.
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* The original version of Color QuickDraw, which was introduced with the first Macintosh II systems. This first generation of Color QuickDraw could support up to 256 colors.
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* The original version of [[Color QuickDraw]], which was introduced with the first Macintosh II systems. This first generation of [[Color QuickDraw]] could support up to 256 colors.
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* The current version of Color QuickDraw, which was originally introduced as 32-Bit Color QuickDraw and is now part of System 7. This version has been expanded to support up to millions of colors.
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* The current version of [[Color QuickDraw]], which was originally introduced as 32-Bit Color QuickDraw and is now part of System 7. This version has been expanded to support up to millions of colors.
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Applications that use only basic QuickDraw routines are compatible with all Macintosh systems. However, applications that use routines specific to Color QuickDraw cannot run on computers supporting only basic QuickDraw.
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Applications that use only basic QuickDraw routines are compatible with all Macintosh systems. However, applications that use routines specific to [[Color QuickDraw]] cannot run on computers supporting only basic QuickDraw.