Components of an operating system-control programs, Operating System

Assignment Help:

CONTROL PROGRAMS

Control Programs are those programs which control & maintain the operation of computer. They provide basic facilities. Control program are further divided into further two categories

i). Initial program loader (IPL): it is essential part of an operating system. It is located permanently in the memory, which is called rom. It is also called resident routine. The basic purpose of IPL is to load other operating system program from secondary memory into the ram. Example:- when Computer is turned ON, then electronic chip is automatically activated & IPL read the boot sector routine (BSR), reside in the primary memory.

ii). supervisors programs: - A supervisory program or supervisor is a computer program, usually part of an operating system, which controls the execution of other routines. It regulates work scheduling, input/output operations, error actions, and similar functions and regulates the flow of work in a data processing system. In case of DOS the command.com is considered as supervisor and once loaded, it will remain all the time in memory while the computer is running.

iii) Job Controller: it is and important element of timesharing system. It recognizes job priorities and provides necessary steps to go from one program to the next. Example SJF (shortest job first)

 


Related Discussions:- Components of an operating system-control programs

What is the use of inter process communication, What is the use of inter pr...

What is the use of inter process communication. Inter process communication gives a mechanism to allow the co-operating process to communicate with each other and synchronies t

Difference between the vfork() and fork() system call, In the mean while th...

In the mean while the fork() system call the Kernel creates a copy of the parent process's address space and adds it to the child process. But the vfork() system call do no

Process abstraction in operating systems, Many early operating systems rega...

Many early operating systems regarded processes as different timesharing users. The process abstraction is a popular way to organize concurrent programs, but it is not the only cho

Determine the syntax of the fork and join primitive, Determine the syntax o...

Determine the syntax of the Fork and Join Primitive  Answer: Syntax of the Fork and Join Primitive is as follow: Fork Join

Why global variables are unacceptable, Why Global variables are unacceptabl...

Why Global variables are unacceptable Global variable, for instance, are unacceptable because they break the rules of self - containment. If all procedural components are runni

Under what circumstances do page faults occur, Under what circumstances do ...

Under what circumstances do page faults occur?  Describe the actions taken by the operating system when a page fault occurs. A page fault happens when an access to a page that

Management, what is secondary storage management

what is secondary storage management

Explain relative file organization, Relative file organization A rela...

Relative file organization A relative file is an array of fixed-length slots and the records can be inserted in the first free slot found from the beginning of the file and

What is a semaphore, Question 1: a) State the different file attribute...

Question 1: a) State the different file attributes and briefly explain the operations that can be performed on each files. b) What is a semaphore? Describe why it is impor

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd