OPERATING SYSTEM

 OPERATING SYSTEM

An operating system (0S) is a system software that manages computer hardware, software, resources and provides common services for computer programs.

In addition, users can interact directly with the operating system through a user interface, such as a command-line interface (CLI) or a graphical user interface (GUI).

For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between programs and the computer hardware.

TYPES OF OPERATING SYSTEM

1. Single-tasking and multi-user: a single tasking system can only run one program at a time, while a multi-tasking operating system allows more than one program to be running concurrently. This is achieved by time-sharing, where the available processor time is divided between multiple processes.

2. Single and Multi-user: single-user operating system have no facilities to distinguish users but may allow multiple programs to run in random, while a multi-user operating system extends the basic concept of multi-tasking with facilities that identify processes and resources, such as disk space.

3. Distributed: a distributed operating system manages a group of distinct, networked computers and makes them appear to be a single computer,as all computations are distributed amongst the constituent computers.

4. Embedded: embedded operating system are designed to be used in embedded computer systems. They are designed to operate on small machines with less autonomy.

5. Real-time: a real time operating system is an operating system that guarantee to process events or data by a specific moment in time.a real-time may be single- or multi-tasking.

6. Library: a library operating system is one in which the services that a typical operating system provides, such as networking, are provided in the form of libraries and composed with the application and configuration code to construct.