| [OT] Pre-emptive multi-tasking (was: PHP: convert a page to pdf [OT]) [message #180968 is a reply to message #180966] |
Fri, 29 March 2013 14:01   |
Thomas 'PointedEars'
Messages: 701
Registered: October 2010
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Tim Streater wrote:
> The Natural Philosopher <tnp(at)invalid(dot)invalid> wrote:
>> cant you come up with something better than that? like " *nix had proper
>> pre-emptive multi tasking years before os9 and windows failed to
>> implement it correctly"
>
> And plenty of OSes had it before unix.
No, according to <http://en.wikipedia.org/wiki/Pre-
emptive_multitasking#Systems_supporting_preemptive_multitasking> and
<http://en.wikipedia.org/wiki/Unix>, Unix, at Bell Labs, was the first
operating system to support *pre-emptive* _multi-tasking_, in 1969/1970
(hence the Unix timestamp 0 equals 1970-01-01 00:00:00 UTC) as an
improvement to the time-sharing Multics (1964) where multi-tasking was first
implemented. Sinclair QDOS (1984) and Amiga OS (1985) and other operating
systems (particularly the Unix-like ones) followed Unix in that regard.
PointedEars
--
Sometimes, what you learn is wrong. If those wrong ideas are close to the
root of the knowledge tree you build on a particular subject, pruning the
bad branches can sometimes cause the whole tree to collapse.
-- Mike Duffy in cljs, <news:Xns9FB6521286DB8invalidcom(at)94(dot)75(dot)214(dot)39>
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