An operating system, or OS, is a software program that enables the computer hardware to communicate and operate with the computer software. Without a computer operating system, a computer would be useless.
Operating system types
As computers have progressed and developed so have the types of operating systems. Below is a basic list of the different types of operating systems and a few examples of operating systems that fall into each of the categories. Many computer operating systems will fall into more than one of the below categories.
GUI - Short for Graphical User Interface, a GUI Operating System contains graphics and icons and is commonly navigated by using a computer mouse. See our GUI dictionary definition for a complete definition. Below are some examples of GUI Operating Systems.
Multi-user - A multi-user operating system allows for multiple users to use the same computer at the same time and/or different times. See our multi-user dictionary definition for a complete definition for a complete definition. Below are some examples of multi-user operating systems.
Multiprocessing - An operating system capable of supporting and utilizing more than one computer processor. Below are some examples of multiprocessing operating systems.
Multitasking - An operating system that is capable of allowing multiple software processes to run at the same time. Below are some examples of multitasking operating systems.
Multithreading - Operating systems that allow different parts of a software program to run concurrently. Operating systems that would fall into this category are:
All other questions relating to an operating system in particular can be found through the operating system page.
Linux / VariantsMacOS
MS-DOSIBM OS/2 WarpUnix / Variants
Windows CE
Windows 3.x
Windows 95
Windows 98Windows 98 SE Windows ME
Windows NT
Windows 2000Windows XP
Windows Vista
Windows 7
MS-DOSIBM OS/2 WarpUnix / Variants
Windows CE
Windows 3.x
Windows 95
Windows 98Windows 98 SE Windows ME
Windows NT
Windows 2000Windows XP
Windows Vista
Windows 7
