Introduction to Operating System

• An operating system is a low-level software that manages the hardware like the mouse, keyboards, CPU, network interface cards.
• It also manages logical resources such as process, files, memory, I/O, schedulers, etc.
• They acts as an interface between the user’s program and the computer hardware and provides an environment in which users can develop and build their applications.
• It is made up of several components where each component works together for a full -fledged operating system.
• Application programs use the system API (system calls) to get the service of an OS.
• Thus in a nut shell an operating system is the manager which manages all the different resources of a system

Some of the important sub-system are:

• Process sub-system
• Memory sub-system
• I/O sub-system
• File sub-system
• Scheduler and Interrupt.

Operating system serves two major tasks:

• It acts as an interface between user’s applications and computer hardware which gives an environment for creating and executing the user’s applications.
• They controls the use of different resources among different users applications and users.

Diag-1: Operating System

• System Software: Assemblers, compilers, drivers.
• Application Software: Web Browser, Word, Media Player.

Related Posts:

• Types of Operating system
• History of Linux Operating System
• Architecture of a Linux Operating System
• Functions of Operating System
• Components of Operating System

Categories: Operating system (OS)