Windows 2.0

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Windows 2.0
Version of the
Closed source
Released to
manufacturing		December 9, 1987; 36 years ago (1987-12-09)
Latest release2.03 / December 9, 1987; 36 years ago (1987-12-09)
LicenseCommercial software
Preceded byWindows 1.0 (1985)
Succeeded byWindows 2.1 (1988)
Support status
Unsupported as of December 31, 2001

Windows 2.0 is a major release of

Windows 1.0
.

The product includes two different variants: a base edition for 8086

VGA graphics. It also introduced Microsoft Word and Excel
.

Noted as an improvement of its predecessor, Microsoft Windows gained more sales and popularity after the release of the operating environment, although it is also considered to be the incarnation that remained a

Windows 2.1
in May 1988, while Microsoft ended its support on December 31, 2001.

Release versions

The

Windows 2.1 in 1988.[4]

The other variant, named Windows/386, was available as early as September 1987,

preemptive multitasking,[7][16]: p.2  and allowed several MS-DOS programs to run in parallel in "virtual 8086" CPU mode, rather than always suspending background applications.[17] With the exception of a few kilobytes of overhead, each DOS application could use any available low memory before Windows was started.[18] Windows/386 also provided EMS emulation,[19] using the memory management features of the i386 to make RAM beyond 640k behave like the banked memory previously only supplied by add-in cards and used by popular DOS applications.[19] There was no support for disk-based virtual memory, so multiple DOS programs had to fit inside the available physical memory.[20] Users could run more applications on the 386 version.[21]

Neither of these versions worked with DOS memory managers like CEMM or QEMM or with DOS extenders, which have their own extended memory management and run in protected mode as well.[22] This was remedied in version 3.0, which is compatible with Virtual Control Program Interface (VCPI) in "standard mode" and with DOS Protected Mode Interface (DPMI) in "386 enhanced" mode.[23][24] Microsoft ended its support for Windows 2.0 on December 31, 2001.[25][26]

Features

Aldus Pagemaker 3.0 on Windows 2.0

Unlike its predecessor, Windows 2.0 allows the user to overlap and resize application windows.

VGA graphics, EMS memory, and new capabilities of the i386 CPU in some versions were also added.[30] Windows 2.0 is the last version of Windows that ran solely on floppy disks.[31]

The operating environment is shipped with fifteen programs,

Aldus Pagemaker and CorelDRAW were also developed for Windows 2.0.[33][27] It is also the first Windows version to integrate the Control Panel and program information files.[34][35]

The Windows API functions are largely handled by KERNEL.EXE, USER.EXE, and GDI.EXE. These files along with device drivers, printer drivers being the exception, are combined by the Windows setup program into WIN200.BIN and WIN200.OVL.[36]: 507–508  The system files WINOLDAP.MOD and WINOLDAP.GRB are used to run MS-DOS programs.[36]: 509 

IBM licensed Windows's GUI for OS/2 as Presentation Manager, and the two companies stated that it and Windows 2.0 would be almost identical.[37]

System requirements

The official system requirements for Windows 2.0 include the following.

Minimum system requirements
Windows 2.01[3][38] Windows 2.03[38][39]
CPU
80386
processor
RAM 512 KB of memory
Storage Two double-sided floppy disk drives or a hard disk
Video EGA or VGA adapters
OS MS-DOS 3.0 or higher
Mouse A Microsoft-compatible pointing device is recommended, but not required

Windows 2.0 was dependent on the DOS system and random-access memory was restricted to a maximum of 1 MB due to running in real mode.[35]

Reception

Windows 2.0 is considered to be an incremental improvement of its predecessor, but still a

BYTE magazine listed the variant as among the "distinction" winner of the BYTE Awards in 1989, describing it as a "serious competition for OS/2" as it "taps into the power of the 80386".[43]

The operating environment cost $99.

Windows 2.1, which was released in the United States and Canada in May 1988.[47]

Legal conflict with Apple

Main article: Apple Computer, Inc. v. Microsoft Corp.

On March 17, 1988,

Macintosh operating system, taken as a whole, was protected by copyright and that Windows 2.0 violated this copyright by having the same icons.[50][51][52] The judge ruled in favor of Hewlett-Packard and Microsoft on all but 10 of the 189 graphical user interface elements on which Apple sued, and the court found the remaining 10 GUI elements could not be copyrighted.[53]

References

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External links
Retrieved from "https://en.wikipedia.org/w/index.php?title=Windows_2.0&oldid=1218321969"