yeah.. http://en.wikipedia.org/wiki/UNIX
--- In Computer_Help_and_Discussion%40yahoogroups.com">Computer_Help_and_Discussion
yahoogroups.com, "Ken (desco)
Ramsey" <desco1kr...> wrote:
>
> Unix roots are from Bell Labs then a subsidiary of AT&T
> http://www.bell-labs.com/history/unix/#
>
> -----Original Message-----
> From: Computer_Help_and_Discussion%40yahoogroups.com">Computer_Help_and_Discussionyahoogroups.com
> [mailto: Computer_Help_and_Discussion%40yahoogroups.com">Computer_Help_and_Discussionyahoogroups.com]On Behalf Of
Brian
> Sent: Sunday, June 17, 2007 3:14 PM
> To: Computer_Help_and_Discussion%40yahoogroups.com">Computer_Help_and_Discussionyahoogroups.com
> Subject: [CHAD] Re: Any tips for job interview as PC tech level 1?
>
> < Minicomputer is a pc > no! these are pretty much "obsolete"
terms..
> but what does an HR dept know! in the same lingo.. a pc is
> a "microcomputer".. but now-a-days the difference is pretty foggy.
>
> here's a run-down:
>
> mainframe: in the old days..these could take up an entire room...
> typically, down to a single rack (about the size of a standard
> refrigerator. The old classic IBM big-box machines like
>; the "system/360";. http://en.wikipedia.org/wiki/IBM_mainframes
> These run on a clunky operating system like IBM's "OS" or "DOS"
(not to
> be confused with the PC flavor!). The "MVS" operating systems is
one
> of the popular later varieties. (generally, pretty boring stuff.)
>
> minicomputer: in the old days.. these usually were as large as
> a 'frig.. but hard to distinguish from your typical pc. (I have yet
to
> see a "mini" in a notebook form.. but no reason to think that it
can't
> happen. The Digital Equipment Corp. (bought by Compaq, which was
> bought by HP.) PDP series is classic (and the VAX series is well
>; known) http://en.wikipedia.org/wiki/Minicomputer
> Although "DEC" (short for Digital Eq.) developed the "VMS" operating
> system that developed into something that was pretty powerful.. The
> famous "UNIX" operating system was developed on DEC gear. A lot of
> companies have made "mini" computers.. HP still does (HP9000
series).
> Many of these companies have disappeared.. but HP, Sun Microsystems,
> IBM and others still build machines in this area. .. and of course,
> AS400 is from IBM.
>;
> OK, so physical size doesn't help us much anymore. The operation
> system gives us a clue. "mainframe" and "mini" computers have one
> other thing in common.. they are designed to run many processes
(i.e.
> different programs) at the same time.. and run with many users (or
at
> least more than one user). They also, may have more than one cpu.
(of
> course, we're seeing pc's with "dual core" and multiple cpus as
well..
> more reasons the definitions are getting blurry!)
>
> When you think of a PC.. you pretty much think "DOS" or "Windows"..
but
> there's a lot Linux showing up. Although Linux was developed on a
PC
> to bring "unix to the small box".. we're also seeing a lot of the
> bigger boxes going toward Linux as well.
>
> You probably need to know a bit about networking as well.
> http://en.wikipedia.org/wiki/Ethernet
> http://en.wikipedia.org/wiki/Token_ring
> http://en.wikipedia.org/wiki/Local_area_network
> http://en.wikipedia.org/wiki/Wide_area_network
> (make wikipedia your friend!)
>
> Good Luck!
>
> // Brian
>
.
