The operating system is software which handles the computer's functionality like scheduling, input/output operation resource allocation, file system manipulation, etc.
It acts as an interface between the computer hardware and the user.
Operating Systems Services
The services offered by the operating system are as follows −
- Input/Output operation
- Resource allocation
- File system manipulation
- User interface
- Program execution
- Communication
- Security
The two main roles of the operating system are −
- Resource Management
- Security
All the resources like Input/Output device, Memory, Processor, Device, and File are managed by the operating system.
The operating system is responsible for any unauthorized access to the computer data or program or software. This security feature of the operating system protects the data or file from viruses, worms, malware, threats, and unauthorized remote access, etc.
Let us discuss each service in detail.
Input/output operation
The program or a task may require any I/O device while running or performing an operation. So, the operating system is going to provide the required I/O.
The Operating System is responsible for handling all sorts of inputs, like keyboard, mouse, desktop, etc.
Resource allocation
The Operating System takes care about the proper use of all the resources available and allots which resource to be used by whom for how much time. All these types of decisions are taken by the Operating System.
The different types of resources are CPU, memory, I/O etc.
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File system manipulation
The operating system gives the permission to the program to perform operations on files like read a file or write a file, delete a file or update a file. These are all the different manipulations that can be done on file by file system manipulation with the help of the operating system.
The Operating System is making decisions regarding the storage of all types of data or files, like floppy disk or hard disk or pen drive, etc.
User interface
Operating systems play an important role and provide the services to interact with users. Mainly it acts as an interface between user and system.
Program execution
Operating system helps in loading a program into memory and executes that program. The program that is executing must be able to end its execution, either normally or abnormally.
Operating systems play a role in executing all types of programs whether it is user program or system program.
Communication
Operating system provides a service for data transfer between two processes. Both processes are on the same computer or on different computers but connected with the help of a computer network.
Communication can be implemented by two methods which are as follows −
- Shared memory
- Message passing
Security
The Operating System is using all the information and resources available on the machine in the most protected way. The security feature of the operating system protects the data or file from viruses, worms, malware, threats, and unauthorized remote access, etc.
Related Questions & Answers
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