Windows®, Mac OS®, UNIX, and Linux operating systems for personal computers? What unique characteristics do mainframe operating systems have?

You can group these into 2 categories:Windows: Windows*Nix: Mac OS (X), Unix, LinuxWindows is, of course, the Microsoft operating system and over the years has picked up some unix conventions (you need to look under the hood a little and know where to look to find them).*Nix, well, it has a rich history, which is mapped out at this link: http://www.levenez.com/unix/history.html#01Note: Mac OS X falls in the *nix category because it runs on a variant of BSD. Linux was an attempt to create "minix type operating system". And Unix is of course unix.I would have to say one unique characteristics of mainframes is their stability. But you can read all about them at this link: http://en.wikipedia.org/wiki/Mainframe_computer.The Data Analyst - http://www.squidoo.com/thedataanalyst

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