A computer system has many resources that may be required to solve a problem: CPU time, memory space, file-storage space, I/O devices, and so on. The operating system acts as the manager of these resources. Facing numerous and possibly conflicting requests for resources, the operating system must decide how to allocate them to specific programs and users so that it can operate the computer system efficiently and fairly.
This is an alternate view about the services performed by the OS. The OS system provides an orderly and controlled allocation of the processors, memories and I/O devices. When a computer has multiple users the need for managing and protecting the memory, I/O devices and other devices is greater. Thus the primary task of OS is to keep track of who is using which resource, to grant resource requests, to mediate conflicting requests from different programs etc. Resource management includes multiplexing resources in two ways - "in time" and "in space". (i)When a resource is time multiplexed different programs or different users gets their turn to use that resource. eg: Printer. (ii)When a resource is space multiplexed instead of taking turns, the resource is shared among them, ie each one gets a part of the resource. eg: Sharing main memory, hard disk etc.
so as to infom the processor of what it ought to do
An operating system manage the word processor.It provides a basis for word processor
The major function of an operating system is to manage all resources of a system.
The different resources of operating system are file system,input/output devices,memory unit,processor....
The special purpose of the operating system is to manage the computer hardware resources. The operating system also provides common services for the computer programs.
The operating system provides a way for the user to manage system hardware and resources while providing a reasonably usable interface for the user to be able to use it.
The processor time is a function of the processor. The memory allocation is a function of the operating system.
Unix internals refer to the algorithms and techniques used by the resident operating system to manage resources.
The primary function of Unix is the same as it would be for an Operating System - to manage resources and provide security.
Resources are the responsibility of the operating system (OS). The programmer can request resources from the OS, but must release them to the system as soon as they are no longer required. As such, the programmer must manage the resources required by the program.
If there is no OS, you can't boot your PC, and therefore, can't do anything but access BIOS until you install an OS. You can do nothing without an OS. problems if no operating system to manage computer system
The two primary objectives of an operating system are:1. to enable running of application programs.2. to manage the different computer resources.