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Operating Systems

 
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Sep7-05, 10:07 PM   #1
 
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Operating Systems

I'm kinda curious on how operating systems were originally made. anyone have an answer?
 
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Sep7-05, 10:18 PM   #2
 
assembly? setting gates and bits to switch flags for specific hardware?

that would be my guess...that is assembly to DOS to graphics.h to
windows/unix.
 
Sep7-05, 10:18 PM   #3
 
Maybe read this?

http://en.wikipedia.org/wiki/History...rating_systems
 
Sep7-05, 11:40 PM   #4
 
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Operating Systems

what I meant was: what languages were used in the computer? I was too vague, sorry
 
Sep7-05, 11:59 PM   #5
 
Quote by yomamma
what I meant was: what languages were used in the computer? I was too vague, sorry
Quote by wikipedia
By 1973, the C language had become powerful enough that most of the UNIX kernel, originally written in PDP-11/20 assembly language, was rewritten in C.
That tells you what Unix was originally programmed with, and reprogrammed with.
 
Sep8-05, 05:13 AM   #6
 
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A little assembly, but mostly C.
 
Sep8-05, 07:55 AM   #7
 
Quote by neurocomp2003
assembly? setting gates and bits to switch flags for specific hardware?

that would be my guess...that is assembly to DOS to graphics.h to
windows/unix.

err.. no.

it was Human based manipulation of registers

to

assembly

to

UNIX

to

a billion other little OSs in the late 70's and 80's (yes, that includes Windows, DOS Mac OS, linux, freebsd, etc)
 
Sep8-05, 10:10 AM   #8
 
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Was Mac the first OS with a desktop and a mouse, instead of a command line and a keyboard?
 
Sep8-05, 10:17 AM   #9
 
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The first personal computer was the Xerox Alto:

http://en.wikipedia.org/wiki/Xerox_Alto

The Mac was based on this computer.
 
Sep8-05, 10:23 AM   #10
 
really unix came before dos?
 
Sep8-05, 07:34 PM   #11
 
Quote by neurocomp2003
really unix came before dos?
Oh my gosh... are you serious?

yes, Unix came out years and years before DOS. DOS was a POS OS that did not even support networking or protected memory. Unix had both of those in the 70's.
 
Sep9-05, 03:31 PM   #12
 
Before C, all operating system were programming in assembly
 
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