Introduction
NextStep is an operating system developed by Next.inc. This system is based on Mach and BSD, with Objective-C as a native language, has a very advanced GUI interface. The 1.0 version of the launch time is on September 18, 1989. Just starting NEXTSTEP can only be implemented on the Next computer, 1992 launched the PC version of the NextStep486.3.1 and version 3.2, in May and October, 1993, but finally failed. The final version 3.3 is painted in 1995. The platform is also no longer limited to the Motorola68000 family, and can also be run on platforms such as IBMPCX86, SunSPARC and HPPA-RISC. Later, Apple bought NEXT in February 1997 and became the foundation of MacOSX.
Development
1.0 version of the launch time is September 18, 1989. Just starting NexTSTep only runs on the NEXT computer's Motorola68000. The PC version of the PC version of the PC released in 1992 was launched in May and October, 1993, but finally failed. The final version 3.3 is released in 1995, the platform is not limited to the Motorola68000 family, which can be run on platforms such as IBMPCX86, SunSPARC and HPPA-RISC. Later, Apple bought NEXT in February 1997 and became the MacOSX foundation.
Component
A MACH core based on UNIX operating system and part of the BSDunix operating system.
PostScript Screen Display System (DPS) and a Windowinger (Windowinger).
Objective-C programming language and its runtime.
An object-oriented application layer includes several tools (Kits).
Based on the development tool for object-oriented application layers mentioned above.
Features
Advanced GUI.
Similar to Macosx's Dock, the running program is assigned to an icon, in fact, it should be the interface of MacOSx continuing NexTSTEP.
48x48 full color icon is the largest and most detailed bit icon system at the time.
MillerColumns file browsing interface, file is displayed in a tree structure. MacOSX's Finder is using this concept.
Adopting object-oriented programming.
version
version Published Note
0.8 October 12, 1988
0.8A 1988
0.91988 The first official release version is only supported by NEXT hardware.
1.0A 1989
1.0A 1989
2.0 September 18, 1990
2.3 March 25, 1991
< P> 2.2
2.0
3.1 May 25, 1993 began supporting I486, PA-RISC and SPARC architecture.
3.2 October 1993
3.3 in February 1995, the last version issued in NEXTSTEP name is also the most popular version.
4.0 (beta) 1996 beta restrictions only developers can get.
to 3.3, Next is bought by Apple.
Application
The world's first WWWSERVER is Tim Bernas - Li in a next nextcube. The first web browser (directly called WorldWideWeb) is also developed by NexTSTEP as the operating system.
Excellent multimedia support, but only a few hospitals bought NEXT computers to store x-ray.