An operating system or OS is software that loads when the computer is turned on and allows the user to operate the software.
Content
- Varieties of operating systems
- Main operating systems (OS)
Without an operating system, it would be useless to work with programs on a computer.
When computers first appeared, users used the command line, in which it was necessary to execute a series of commands in order to interact with the hardware of the computer.
All computers today use a graphical user interface (GUI). Thanks to the GUI, anyone can operate a PC without special training.
GUI is short for graphical user interface.
The operating system contains graphics, icons, and usually navigation is done with a computer mouse. See the GUI for a complete definition.
Below are some examples of popular operating systems using the GUI.
Examples of operating systems
- Microsoft Windows 7 or 8 is an operating system from Microsoft Windows, which ranks 1st in popularity.
- Apple MacOS – Apple operating system. The only computer operating system from Apple.
- Ubuntu Linux is a popular Linux variant used in IBM compatible computers.
- Google Android is an operating system designed for phones.
- IOS is an operating system designed for mobile phones from Apple.
Types of operating systems
A multi-user operating system allows multiple users to use the same computer at the same time or at different times. Below are some examples of multi-user operating systems.
- Linux
- Unix
- Windows 2000
A multiprocessor is an operating system capable of using more than one processor. Below are some examples of multiprocessor operating systems.
- Linux
- Unix
- Windows 2000
Multitasking is an operating system capable of performing multiple tasks at the same time.
- Unix
- Windows 2000
Multithreading – a process in the operating system can consist of several threads, thanks to multithreading, several threads can work simultaneously. Operating systems that fall into this category:
- Linux
- Unix
- Windows 2000
