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A presentation on operating system
- 1. A PRESENTATION ON OPERATING SYSTEM SUBMITTED BY = NILRATAN SARKAR , KHOKAN PAUL , RAIHAN SARKAR CIP , BUDBUD , CST DATE = 22ND AUGUST , 2018
- 2. FLOW OF PRESENTATION • INTRODUCTION • STRUCTUR OF OS • MAIN FUNCTION OF OPERATING SYSTEM • SOME POPULAR OPERTAING SYSTEM • CONCLUSION
- 3. INTRODUCTION – Operating system is an integrated set of program that controls the resources of a computer system and provides its users with an interface or virtual machine that is easier to use than the bare machine. – Operating system is a software , which makes a computer to actually work. – It is the software that enables all the programs we use. – OS acts as an interface between the application programs and the machine hardware.
- 4. STRUCTURE OF OS • The two primary objective of an operating system are : - • (1) . Make a computer system easier to use : - An operating system hides details of hardware resources from programmers and other users and provides them with a convenient interface for using a computer system. • (2) . Manage the resources of a computer system : - An operating manages all the resources of a computer system. Efficient and fair sharing of system resources among users and/or programs is a key goal of all operating system.
- 5. Computer Hardware Structure of OS User Other Systems Operating System
- 6. MAIN FUNCTIONS OF OPERATING SYSTEM A separate module of operating system software performs each of the functions : (1) . Process management : - Process management module takes care of creation and deletion of processes, and providing mechanisms for synchronization and communication among processes. (2) . Memory management : - Memory management module takes care of allocation and de- allocation of memory space to programs in need of this resources. (3) . File management : - It takes care of file-related activities such as organization storage , retrieval, naming, sharing, and projection of files. (Contd..)
- 7. (4) . Security : - Security module protects the resources and information of a computer system against destruction and unauthorized access. (5) . Command interpretation : - Command interpretation module takes care of interpreting user commands , and directing system resources to process the commands.
- 8. Some popular operating systems Operating system can also be classified as : - (1) . Single User Systems : - They are popularly associated with Desk Top operating system which run on standalone system where no user accounts are required . Example : DOS . (2) . Multi User System : - Provides regulated access for number of user by maintaining a database of known users . Example : Unix, Microsoft Windows NT.
- 9. Conclusion • Without operating system the computers cannot run the application and we cannot do work in the computer. • Therefore operating system is very important in computer.
- 10. Thank you