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Windows 1.0 is a graphical personal computer operating environment developed by Microsoft. Microsoft had worked with Apple Computer to develop applications for Apple's January 1984 original Macintosh, the first mass-produced personal computer with a graphical user interface. Windows 1.0 was released on November 20, 1985, as the first version of the Microsoft Windows line. It runs as a graphical, 16-bit multi-tasking shell on top of an existing MS-DOS installation, providing an environment which can run graphical programs designed for Windows, as well as existing MS-DOS software. Its development was spearheaded by the company founder, Bill Gates, after seeing a demo of a similar software suite known as Visi On at COMDEX. Despite positive responses to its early presentations and support from a number of hardware and software makers, Windows 1.0 was received poorly by critics, who felt it did not meet their expectations. In particular, they felt that Windows 1.0 put too much emphasis on mouse input at a time when mouse use was not yet widespread; not providing enough resources for new users; and for suffering from performance issues, especially on systems with lower hardware specifications. Despite this criticism, Windows 1.0 proved to be an important milestone for Microsoft, and in computer history in general.〔 Windows 1.0 was officially declared obsolete and unsupported by Microsoft on December 31, 2001. == History == The development of Windows began after Microsoft founder Bill Gates saw a demonstration at COMDEX 1982 of VisiCorp's Visi On, a graphical user interface software suite for IBM PC compatibles.〔 Microsoft first presented Windows to the public on November 10, 1983. Requiring two floppy disk drives and 192 KB of RAM, Microsoft described the software as a device driver for MS-DOS 2.0. By supporting cooperative multitasking in tiled windows when using well-behaved applications that only used DOS system calls, and permitting non-well-behaved applications to run in a full screen, Windows differs from both Visi On and Apple Computer's Lisa by immediately offering many applications. Unlike Visi On, Windows developers did not need to use Unix to develop IBM PC applications; Microsoft planned to encourage other companies, including competitors, to develop for Windows by not requiring a Microsoft user interface in their applications. Many manufacturers of MS-DOS computers such as Compaq, Zenith, and DEC promised support, as did software companies such as Ashton-Tate and Lotus. After previewing Windows, ''BYTE'' stated in December 1983 that it "seems to offer remarkable openness, reconfigurability, and transportability as well as modest hardware requirements and pricing … Barring a surprise product introduction from another company, Microsoft Windows will be the first large-scale test of the desktop metaphor in the hands of its intended users". From early in Windows' history Gates viewed it as Microsoft's future. He told ''InfoWorld'' in April 1984 that "Our strategies and energies as a company are totally committed to Windows, in the same way that we're committed to operating-system kernels like MS-DOS and Xenix. We're also saying that only applications that take advantage of Windows will be competitive in the long run." IBM was notably absent from Microsoft's announcement, and by late 1984 the press reported a "war of the windows" between Windows, IBM's TopView, and Digital Research's GEM. Microsoft meanwhile had promised in November 1983 to ship Windows by April 1984, but now denied that it had announced a release date, and predicted that Windows would ship by June 1985. Deemphasizing multitasking, the company stated that Windows' purpose, unlike that of TopView, was to "turn the computer into a graphics-rich environment" while using less memory. 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「Windows 1.0」の詳細全文を読む スポンサード リンク
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