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The Apple Macintosh II is the first personal computer model of the Macintosh II series in the Apple Macintosh line and the first Macintosh to support a color display. A basic system with 20 MB drive and monitor cost about $5500, A complete color-capable system could cost as much as $10,000 once the cost of the color monitor, video card, hard disk, keyboard and RAM were added. This price placed it in competition with workstations from Silicon Graphics, Sun Microsystems and Hewlett-Packard. The Macintosh II was designed by hardware engineers Michael Dhuey (computer) and Brian Berkeley (monitor) and industrial designer Hartmut Esslinger (case). == History == Two common criticisms of the Macintosh from its introduction in 1984 were the closed architecture and lack of color; rumors of a color Macintosh began almost immediately, The Macintosh II project was begun by Dhuey and Berkeley during 1985 without the knowledge of Apple co-founder and Macintosh division head Steve Jobs, who opposed features like expansion slots and color, on the basis that the former complicated the user experience and the latter did not conform to WYSIWYG, since color printers were not common. Initially referred to as "Little Big Mac", it was codenamed "Milwaukee" after Dhuey's hometown, and later went through a series of new names, including "Reno", "Uzi" and "Paris" (after Jean-Louis Gassee, Apple's then products manager, who protected the semi-clandestine project from cancellation).〔Levy, Steven. ''Insanely Great: The Life and Times of ''Macintosh'', the Computer That Changed Everything.'' New York: Viking, 1994; p. 229-231〕 After Jobs was fired from Apple in September 1985, the project could proceed openly. Introduced in March 1987 and retailing for US $5,498,〔(Macintosh II and Macintosh SE announced )〕 the Macintosh II was the first "modular" Macintosh model, so called because it came in a horizontal desktop case like many IBM PC compatibles of the time. All previous Macintosh computers used an all-in-one design with a built-in black-and-white CRT. The Macintosh II had drive bays for an internal hard disk (originally 20 MB or 40 MB) and an optional second floppy disk drive. It, along with the Macintosh SE, was the first Macintosh computer to use the Apple Desktop Bus (ADB) introduced with the Apple IIGS for keyboard and mouse interface. The primary improvement in the Mac II was Color QuickDraw in ROM, a color version of the graphics language which was the heart of the machine. Among the many innovations in Color QuickDraw were an ability to handle any display size, any color depth, and multiple monitors. With its pioneering support for 32-bit color (24 bit color depth and 8 bit alpha channel) Mac II was the first personal computer which could display true color photorealistic images without aftermarket upgrades. Because Color QuickDraw was included in the Mac II's ROM, earlier Macintoshes could not be upgraded to display color. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Macintosh II」の詳細全文を読む スポンサード リンク
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