LECTURE 12

OPERATING SYSTEMS - FUNCTIONING

FRI JUL 20 2018

INTRODUCTION

Operating system​ perform the basic function of managing the entire computer system, in order to carry out required tasks.  During this management process, the operating system functions basically as both servant and master, in that it gives the user what are necessary to get their task done, while taking care of its own assemblage of resources for this purpose.  This section will take us back to the role of the operating system as we try to get it to work.

12.1     OPERATING SYSTEMS - EXTENDED MACHINE

The user is able to perform functions by use of operating systems.  The operating system thus acts as an extended machine in that it give the user the platform to perform the task needed to be accomplished.  Operating system acts as extended machines in the following ways

  • can be related with at different levels so that any user at any level can use a computer, to create products or outputs

  • a place to store files

  • the user does not need to perform complex processes in maintenance

  • can interrelate task that would have required movement from one place to another

  • is predictable and would give outputs that would by themselves not cause any danger

11.2     OPERATING SYSTEMS - RESOURCE MANAGER
The operating system manages all resources of a computer system, making it be able to give them service users need to perform requited tasks.  In managing resources, operating systems 

  • manages the memory and virtual memory to ensure processes run smoothly

  • ensure that the steady flow of information between programs so that there is no clash

  • manages the time allocated to processes of the system, during transformation of data into information

  • makes sure the hardware is responsive to all request being made.

  • monitors the health of the entire system, giving alert where appropriate and executing curative measures in other instances.

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