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| Version of the Microsoft Windows operating system | |
 | |
| Developer | Microsoft |
|---|---|
| OS family | Microsoft Windows |
| Source model | Closed source |
| Released to manufacturing | November 20, 1985 |
| Latest release | 1.04 [IBM PS/2] / June 1, 1987 |
| License | Commercial software |
| Succeeded by | Windows 2.0 (1987) |
| Support status | |
| Obsolete, unsupported as of December 31, 2001 | |
Windows 1.0 is the first major release of Microsoft Windows, a family of graphical operating systems for personal computers developed by Microsoft. It was first released to manufacturing in the United States on November 20, 1985, while the European version was released as Windows 1.02 in May 1986.
Its development began after the Microsoft co-founder and spearhead of Windows 1.0, Bill Gates, saw a demonstration of a similar software suite, Visi On, at COMDEX in 1982. The operating environment was showcased to the public in November 1983, although it ended up being released two years later. Windows 1.0 runs on MS-DOS, as a 16-bit shell program known as MS-DOS Executive, and it provides an environment which can run graphical programs designed for Windows, as well as existing MS-DOS software. It included multitasking and the use of the mouse, and various built-in programs such as Calculator, Paint, and Notepad. The operating environment does not allow its windows to overlap, and instead, the windows are tiled. Windows 1.0 received four releases numbered 1.01 through 1.04, mainly adding support for newer hardware or additional languages.
The system received lukewarm reviews; critics raised concerns about not fulfilling expectations, its compatibility with very little software, and its performance issues, while it has also received positive responses to Microsoft's early presentations and support from a number of hardware- and software-makers. Its last release was 1.04, and it was succeeded by Windows 2.0, which was released in December 1987. Microsoft ended its support for Windows 1.0 on December 31, 2001, making it the longest-supported out of all versions of Windows.
- OS
System requirements
[edit]The official system requirements for Windows 1.0 include the following.
| Windows 1.01 | Windows 1.02 | Windows 1.03 | Windows 1.04 | |
|---|---|---|---|---|
| CPU | 8086 processor | 8086 processor | 8086 processor | 8086 processor |
| Random Access Memory | 256 KB of memory | 256 KB of memory | 320 KB of memory | 320 KB of memory |
| Storage | Two double-sided floppy disk drives or a hard disk | Two double-sided floppy disk drives or a hard disk | Two double-sided floppy disk drives or a hard disk | Two double-sided floppy disk drives or a hard disk |
| Video | CGA, HGC, or EGA adapters | CGA, HGC, or EGA adapters | CGA, HGC, or EGA adapters | CGA, HGC, EGA, or VGA adapters |
| OS | MS-DOS 2.0 through MS-DOS 3.10 | MS-DOS 2.0 through MS-DOS 3.10 | MS-DOS 2.0 through MS-DOS 3.20 | MS-DOS 2.0 through MS-DOS 3.20 |
| Mouse | A Microsoft-compatible pointing device is recommended, but not required | A Microsoft-compatible pointing device is recommended, but not required | A Microsoft-compatible pointing device is recommended, but not required | A Microsoft-compatible pointing device is recommended, but not required |
Compatibility
[edit]| 1.01 | 1.02 | 1.03 | 1.04 | |
|---|---|---|---|---|
| IBM Personal Computer | No | No | No | No |
| IBM PCjr | No | No | No | No |
| IBM Personal Computer XT | Yes | Yes | Yes | Yes |
| IBM Personal Computer AT | Yes | Yes | Yes | Yes |
| Compaq Deskpro 386 | Yes | Yes | Yes | Yes |
| ThinkPad | Yes | Yes | Yes | Yes |
| IBM PS/2 | No | No | No | Yes |