Operating Systems

  • Thread starter JamesU
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  • #1
JamesU
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I'm kinda curious on how operating systems were originally made. anyone have an answer?
 

Answers and Replies

  • #2
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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.
 
  • #4
JamesU
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what I meant was: what languages were used in the computer? I was too vague, sorry
 
  • #5
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yomamma said:
what I meant was: what languages were used in the computer? I was too vague, sorry
wikipedia said:
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.
 
  • #6
dduardo
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A little assembly, but mostly C.
 
  • #7
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neurocomp2003 said:
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)
 
  • #8
EnumaElish
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Was Mac the first OS with a desktop and a mouse, instead of a command line and a keyboard?
 
  • #10
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really unix came before dos?
 
  • #11
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neurocomp2003 said:
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.
 
  • #12
Before C, all operating system were programming in assembly
 

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