An operating system (OS) is system software that manages computer hardware and software resources, and provides common services for computer programs. The operating system is a vital part of the system, without which the computer would not be able to function.
The operating system performs a number of important tasks, including:
- Managing the computer's hardware resources, such as the CPU, memory, and storage.
- Providing a user interface (UI) that allows users to interact with the computer.
- Managing files and directories.
- Providing security features to protect the computer from unauthorized access.
- Running applications.
There are many different operating systems available, each with its own strengths and weaknesses. Some of the most popular operating systems include:
- Windows: Windows is the most popular operating system in the world. It is used by millions of people on personal computers, laptops, tablets, and smartphones.
- macOS: macOS is the operating system used by Apple computers. It is known for its user-friendly interface and its integration with other Apple products.
- Linux: Linux is a free and open-source operating system. It is popular among developers and system administrators because it is highly customizable and scalable.
- Android: Android is a mobile operating system developed by Google. It is the most popular mobile operating system in the world, and it is used by billions of people on smartphones and tablets.
- iOS: iOS is the operating system used by Apple mobile devices, such as the iPhone and iPad. It is known for its sleek design and its integration with other Apple products.
The choice of operating system depends on the needs of the user. For example, Windows is a good choice for users who want a user-friendly operating system with a wide range of software available. macOS is a good choice for users who want an operating system that is integrated with other Apple products. Linux is a good choice for users who want a customizable and scalable operating system. Android is a good choice for users who want a mobile operating system with a wide range of apps available. iOS is a good choice for users who want a sleek and integrated mobile operating system.
K. C. Wang received the BSEE degree from National Taiwan University in 1960 and the PhD degree in Electrical Engineering from Northwestern University, Evanston, IL, in 1965. He is currently a professor in the School of Electrical Engineering and Computer Science at Washington State University. His academic interests are in operating systems, distributed systems, and parallel computing
PhD at faculty of Computers and information zagazig university