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I am doing my bachelor's degree at a university. In a written assignment, the professor posted the task: "Name three PC operating systems".
Well, I went on an included a variety of OSes (Linux, Windows, Mac OS X) and including Unix & Solaris. Today I received a mail from my professor saying:
Unix is not a PC operating system. Many Unix-variants are not PC-hardware compatible (like AIX & HP-UX. About Solaris: there was one PC-compatible version...)
I am kind of suprised: Even if many Unix-variants are PowerPC based and have a different bit-order – Those don't stop being PCs now, right?
The question was given in a written assignment! It was not a question that came up during the lecture!
Due to the original task being in German, I'll include it just to make sure nobody suspects an error in the translation.
Frage: Nennen Sie 3 PC-Betriebssysteme.
Antwort: Unix ist kein PC-Betriebssystem, viele Unix-Varianten sind nicht auf PC-Hardware lauffähig (AIX, HP-UX). Von Solaris gab es mal eine PC-Variante.
@Corelgott, Please tell us what happened after your professor had viewed this thread. – Pacerier – 2015-07-12T17:09:40.760
9Windows in various incarnations, OS/2, various DOS's (not just the MicroSoft ones either), BeOS, Linux, FreeBSD, NetBSD, OpenBSD, and I know I've missed some. The problem with "Unix" is that it is ill-specified, but then so is "PC". – dmckee --- ex-moderator kitten – 2012-03-28T23:19:32.633
17Your prof is just plain wrong. There have been several versions of Unix that ran on "the PC" (don't know if there are any currently), and versions of Windows that run on non-PC devices. But his point is possibly that you should be parroting back what he said in the lecture, when you were either asleep or absent. – Daniel R Hicks – 2012-03-29T01:18:13.510
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I think your professor should learn that "communicating badly and then acting smug when you're misunderstood is not cleverness." http://xkcd.com/169/
– William Jackson – 2012-03-29T01:32:15.9832
Various versions of Windows also run on ARM and Itanium architectures (hardly "PC") so obviously Windows is also a wrong answer. I still stand by my answer on Meta, the term needs to go.
– Daniel Beck – 2012-03-29T06:59:54.7372Could this be the same professor, who predicted the end of the world for January 1st, 2000 at 0:01 hours, thus being responsible for thousands of workers spending new year's eve in the office instead of being at a party? – ott-- – 2012-03-29T07:48:39.350
1When I read the German Wikipedia it says "that is used by one person -- thus, personal". Since almost (?) all modern operating systems support multiple users. And even in the past I used to play computer games where two persons used the keyboard at the same time. Oh well, definitions definitions definitions... – Legolas – 2012-03-29T08:24:29.570
1"About Solaris: there was one PC-compatible version..." I don't know how the professor defines "PC" but Solaris remains available for SPARC, x86 and x64. Although SPARC desktops appear to have died out. – Andrew J. Brehm – 2012-03-29T09:51:24.597
5@ott, the Y2K bug was a real issue. The reason it wasn't worse was because it was taken very seriously. – Thorbjørn Ravn Andersen – 2012-03-29T09:58:10.733
9You professor needs to define specifically what they mean by PC and what they mean by UNIX. Because both are vague and ambiguous. Many people say UNIX and actually mean UNIX-like because UNIX is a trademarked brand and requires certification to be able to use the term. And everyone uses PC to generally mean Windows compatible. – None – 2012-03-29T13:07:47.337
2@ThorbjørnRavnAndersen The year 2038 32-bit UNIX time bug will be worse. Thankfully, most Unix systems will have migrated to 64-bit by then. – unixman83 – 2012-03-29T21:07:41.870
4I encountered this kind of questions many times. I usually prelude answers to such questions with what I think is meant by it. E.g. "I suppose 'PC' means 'intel x86 based desktop workstation'" or something like this. – EricSchaefer – 2012-03-31T11:08:34.733
Just to throw my 2¢ in: I second others who say that the question is too broad and vague. Certainly there have been ports of AT&T's Unix to the Intel PC architecture. For example, I used Microport System V for some time before the Linux kernel entered solid pre-1.0 beta releases and I was able to switch over.
– Heptite – 2012-03-29T01:42:09.097Windows not NOT a PC-operation system! When you define a PC-OS is something that runs only on a PC. Windows phone 7 runs on a cell phone what is not a PC. Several other Windows Embedded http://msdn.microsoft.com/en-US/library/aa460727(v=WinEmbedded.5).aspx versions run on set-top boxes, industrial controllers and so on.
– harper – 2012-03-31T15:21:10.260