Os views

operating system views

1. Operating System Concepts
Mrs.G.Chandraprabha,M.Sc.,M.Phil.,
Assistant Professor
Department of Information Technology
V.V.VanniaperumalCollege for Women
Virudhunagar

2. Aprogramthatactsasanintermediarybetweena
userofacomputerandthecomputerhardware.
Operatingsystemgoals:
Executeuserprogramsandmakesolvinguserproblems
easier.
Makethecomputersystemconvenienttouse.
Usethecomputerhardwareinanefficientmanner.
Operating System Concepts

3. 1.Hardware–providesbasiccomputingresources
(CPU,memory,I/Odevices).
2.Operatingsystem–controlsandcoordinatesthe
useofthehardwareamongthevariousapplication
programsforthevarioususers.
3.Applicationsprograms–definethewaysinwhich
thesystemresourcesareusedtosolvethe
computingproblemsoftheusers(Word
processors,Spreadsheets,compilers,andweb
browsersetc.,).
4.Users(people,machinesandothercomputers).
Operating System Concepts

4. Operating System Concepts

5. Operating system can be explored from
two view points.
User view
System view
Operating System Concepts

6. Operating System Concepts
PC Computer systems->OS is designed for the
convenience to all users
Main frame systems ->OS is to be an effective
utilization of the hardware
Handheld systems-> some are connected to
networks directly through wireless and
more convinience and effective utilization of
resources.

7. Operating System Concepts

8. Operating System Concepts

9. Resource allocator –manages and allocates
resources.
Control program –controls the execution of user
programs and operations of I/O devices
Kernel –the one program running at all times (all
else being application programs).
Operating System Concepts

10. Operating System Concepts