jeromemac a dit:
je pose la question pour voir ce qu'en pense d'autre personne, car j'ai eu une discution assez longue et assez répétitive avec quelqu'un de ce forum, donc je vous explique:
pour moi qui suit dev, quand je vois les version et les copyright de macos9 et macosX, je pense que macosX est une evolution du logiciel qu'est macos9, même si les base on été changé, même si c'est une fusion de plusieur monde, il n'en reste pas moins que macosx est bien la version 10, donc après la 9 de MacOS, et que notre prochain logiciel système sera MacOSXI, puis macosXII.... ect.... ect.... car la personne me disait qu'en fait macosX n'a absolument rien à voir, et que ce n'est pas une evolution de macos9, c'est pas le même logiciel, alors moi je pose la question pourquoi la version 10.x.x si c'est pas une evolution, et aussi pourquoi le copyright est alors de 1983 - 2003, si le logiciel a été crée en 2000...???....
http://openjaguar.online.fr/pub/Darwin-DNA.pdf.gz
Macintosh OS X can be said to have begun it' s life, although unbeknownst to even those involved,
when NeXT Computer began OpenStep and NextStep. Macintosh OS X is a combination of Apple' s OS,
NeXT Computer' s OpenStep OS, and UNIX operating systems. Steve Jobs, Steve Wozniak, and Mike Markkula,
original founders of Apple Computer in 1976, introduced the world to an open architecture computer which
included sound and colour graphics in a graphical user interface. This interface was loosely based upon one Xerox
had been working on; however, they didn' t think it had as much potential as Apple Computer thought it had.
Working on the improvement of the graphical user interface, Apple has looked at many different OS architectures
and has steadily improved their OS' s operation and appearance. Steve Jobs eventually left Apple Computer
and started another company called NeXT Computer.
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In 1999 Apple announced the specifications for its next generation operating system,
an upgrade to OS 9.
This next operating system would be OS X; a complete overhaul of OS 9.
The announcement settled speculation and rumors revolving around Apple's plans
since the return of Steve Jobs.
Steve Jobs returned to the helm of Apple after a several year hiatus where he headed several startups.
The most significant and successful of these were NeXT Computers and Pixar Animation.
NeXT Computers was involved in bringing the best of the Macintosh to the UNIX world.
NeXT offered a line of computers running the NeXTStep operating system.
NeXTStep was based on the Mach kernel developed originally at Carnegie Mellon University.
Despite some innovative technologies ( webobject ) and user refinements NeXT was never a commercial
success.
Steve Jobs retained the intellectual rights to most of the innovations that came from NeXT.
When he returned to Apple in 1997, he brought those innovations along with
the core team of developers and systems engineers responsible for NeXTStep.
These innovations and refinements became the core of OS X.
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Darwin is a complete BSD UNIX implementation, derived from the original 4.4BSD-Lite2
(from the University of California at Berkeley's) Open Source distribution. Darwin uses a monolithic
kernel based on FreeBSD 4.4 and the OSF/mk Mach 3, combining BSD' s POSIX support,
It is a fully functional, POSIX compliant, UNIX operating system with a proprietary graphical
user interface (GUI) called Aqua, with the fine-grained multithreading and real-time performance of Mach.***
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When Steve Jobs created NeXT Computer in 1985 they began designing an operating system called
NextStep to run on their own hardware. NeXT eventually abandoned hardware development and
adjusted their OS to run on several other platforms and hardware architectures. They called this new OS
OpenStep, to represent its openness. *** When Apple Computer purchased NeXT in 1996 they acquired this OS,
which was based on Mach, 4.4 BSD and NeXT' s own NextStep libraries. Apple had been developing an OS
to replace their current one but the project was tabled when it wasn' t providing the aspects of a current
operating system Apple wanted. Their new project was called Rhapsody and it was going to be an overhauled
OpenStep with a Macintosh interface sitting on top of a Mach kernel.
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This developed into the Macintosh OS X project which was predominantly the same as the Rhapsody development
with the addition of APIs to provide a successful environment for legacy applications and to allow true preemptive
multitasking. The kernel for OS X is UNIX based Mach and 4.4BSD .
The kernel for OS X is called Darwin and is an open-source development.
It can be ported to other hardware architectures and processors, which will do several things for the OS.
It will open the viable market for the base OS allowing it to be developed for multiple platforms.
