Understanding the Functions of an Operating System
Discover the two main functions of an operating system – Provision of Virtual Machine and Resource Sharing. The operating system manages computer resources, increases availability and utilization, and provides virtual machine characteristics to users. Learn about input/output capabilities, memory management, filing systems, and error handling in operating systems.
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Presentation Transcript
Main unction of the Operating system An operating system preforms two main functions Provision of Virtual Machine Resource Sharing 1 2 King Saud University Applied Studies and Community Service CYS 1112
The computer resources are: : ( The central processor ( The memory ( ) The input/output devices ( The information ( ) ) Resource Sharing ) / 1 King Saud University Applied Studies and Community Service CYS 1112
Resource Sharing The aim of the Operating System : ( Increase the availability of the resources ( maximize the utilization of such resources ( Therefor the role of the operating system is keeps track of the status of each resource, and decides who gets a resource, for how long, and when. ( ) ) : ) ) . King Saud University Applied Studies and Community Service CYS 1112
The operating system transfers a raw piece of hardware into a machine, which is easily used. ( Provision of Virtual Machine ) . Through presenting the user with a virtual machine characteristics are different from the underlining physical machine ( 1 ) . King Saud University Applied Studies and Community Service CYS 1112
Input/Output (I/O): ( Basic hardware may be extremely complex and require sophisticated programming. An operating system will relieve the user of the burden of understanding this complexity and will present a virtual machine which is simpler to use, through equally powerful, I/O capabilities. ( / . Memory: Many operating systems present a virtual machine with memory differs from the underlying real machine. For example, an Operating System may use I/O)) ( / Some of the areas the virtual machine differ from the underlying real machine: . ) King Saud University Applied Studies and Community Service CYS 1112 secondary storage to give the illusion of a larger main memory. ( .
Filing system: ( Based on the disk or tap storage of the real machine for long-term storage. The Operating System allows the user to access the stored information by symbolic name which is easier to understand. ( . ) Protection and Error Handling: ( Even though basic computer hardware are varied considerably in the degree of protection provided, it is essential when a computer shared by more than one user, that each user be protected against the effects of error or malice in ) Some of the areas the virtual machine differ from the underlying real machine: . ) King Saud University Applied Studies and Community Service CYS 1112 others through the Operating System. (
question Why is operating system important? What is the main purpose of an operating system? King Saud University Applied Studies and Community Service CYS 1112
End of First Lecture King Saud University Applied Studies and Community Service CYS 1112
