Review of operating system concepts

Let us first learn what an Operating system is?
Before going to this Operating System concept, first we must know what is SOFTWARE.

A collection of specialized programs is known as Software.
It has two types-

• Application Software, and
• System Software

Application Software- Which is going to meet all end users requirements. Like Word processor, Browsers, Databases.


System Software- Software required to run the hardware parts of the computer and other computer software. (Acts as a interface between hardware and user applications.)

Mainly classified into 2 types:

• Operating System
• System Utilities - System utilities are the core software functions that allow you to manage your computer in ways that you would find it inconceivable to be without. System utilities may be already included in your computer or downloaded from the Internet.

Examples are- Disk Cleanup, Disk Fragmentation

Operating System, is a software which operates all hardware components. OS is an interface between human being and the computer.

So, OS is the interface between user and computer.

Main functions of Operating system-

• Memory Management
• File Management
• Security
• Disk Management
• Job Scheduling
• I/O system management
• Networking
• Program Execution
• File system manipulation