what was the first ever operating system used?

what was the first ever operating system used? References

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1. What was the first operating system

   This is one of the things no one will ever know for ... control systems became more widely used. In ... System was the first operating system to have ...

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2. Operating system - Wikipedia, the free encyclopedia

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   The operating system was first released in 1999 as Mac OS ... The supervisor mode is used by the operating system\'s kernel for low level tasks that need ...

   en.wikipedia.org/wiki/Operating_system - Cached

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3. what was the first ever operating system used? - Stack Overflow

   I want to know what was the first ever operating system used on big machines (super computers, mainframes) And what was the first operating system used on personal ...

   stackoverflow.com/questions/15275092/​what-was-the-first... - Cached
   

4. What was the first Operating System you ever used?

   About You, Me and Everything Inbetween ... \"The first OS I got to play with was Windows for Workgroups 3.11! What was yours? Post ...\" · \"Windows 95. I was only 8 ...

   www.betaarchive.com/forum/​viewtopic.php?f=54&t=8154 - Cached
   

5. history of operating systems

   This design is called von Neumann architecture and has been used in almost every digital computer ever m ade. ... The first operating system to introduce system calls ...

   www.osdata.com/kind/history.htm - Cached
   

6. What was the first Operating System you ever used?

   About You, Me and Everything Inbetween ... \"Sadly my first operating system was Minix. I wish it was dos or win 3.11 or something.\" ... \"My first OS i ever used was ...

   www.betaarchive.com/forum/​viewtopic.php?f=54&t=8154&... - Cached
   

7. Smartphone - Wikipedi a, the free encyclopedia

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   It was the world\'s most widely used smartphone operating system until Q4 2010. ... The 7650 from 2002 was the first ever camera phone to hit the European market ...

   en.wikipedia.org/wiki/Smartphone - Cached

What was your first operating system? - Crowdsourcing ...

The first Operating System I seriously used was Windows 95. ... Windows 98 was the firs t operating system I ever had, in fact, I still have mine in the other room.

lockergnome.net/.../what-was-your-first-​operating-system - Cached

Whats the first Operating System you ever used? - Geeks

Whats the first Operating System you ever used? -I think mine was Windows 98

geekwith.com/forum/topics/whats-the-​first-operating - Cached

The World’s First Computer Operating System Implemented at ...

... Details of the first operating system are ... we should consider I/O System as the first Operating System? I read the operating system used in ...

millosh.wordpress.com/2007/09/07/the-​worlds-first... - Cached