Operating system Informisson

An operating system (OS) is software that manages computer hardware and software resources and provides common services for computer programs. All computer programs, excluding firmware, require an OS to function. Operating systems are found on many devices that contain a computer – from cellular phones and video game consoles to web servers and supercomputers.

The dominant desktop operating system is Microsoft Windows with a market share of around 82.74%. macOS by Apple Inc. is in second place (13.16%), and the Linux family of operating systems is in third place (1.80%). Linux distributions are dominant in the server and supercomputing sectors. Other specialized classes of operating systems, such as embedded and real-time systems, exist for many applications.

A single-tasking system can only run one program at a time, while a multi-tasking system allows more than one program to be running in concurrency. This is achieved by time-sharing, where the available processor time is divided between multiple processes. Even though systems can be designed to handle multiple processes at once, a process scheduler is typically employed to switch between processes in a manner that gives each process a fair share of the processor time. Multi-tasking may be characterized by preemptive and

operating system pdf

The operating system is a vital component of the computer system. It manages the hardware and software resources of the system and provides common services for computer programs. The operating system is also responsible for the security, performance, and stability of the system.

There are different types of operating systems available for different purposes. Some of the most popular operating systems include Windows, Linux, and macOS. Each operating system has its own advantages and disadvantages.

Windows is a popular operating system developed by Microsoft. It is easy to use and has a wide range of software and hardware compatibility. However, it is not as stable as Linux and is more vulnerable to malware and viruses.

Linux is a free and open-source operating system. It is very stable and has a wide range of software and hardware compatibility. However, it is not as user-friendly as Windows and can be difficult to learn for new users.

macOS is a Unix-based operating system developed by Apple. It is easy to use and has a wide range of software and hardware compatibility. However, it is not as stable as Linux and is more vulnerable to malware and viruses.