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

Paging, protection in paging

protection in paging

Explain the thread contextual data, Explain the Thread Contextual Data  ...

Explain the Thread Contextual Data  Threads in Net Ware carry additional context as well. Per-thread, stacks, errno, Net Ware Errno, t_errno and others are available to the ap

What advantages are there to this two-level directory, What advantages are ...

What advantages are there to this two-level directory? Users are isolated from each other. Users have more freedom in choosing file names.

State the advantage of multiprocessor system, State the advantage of multip...

State the advantage of multiprocessor system? The advantages of multiprocessor system are:- a)      Enhanced throughput. b)      Economy of scale. c)       Enhanced re

What are the system components of an operating system, What are the system ...

What are the system components of an operating system and explain them? a) Process management b) Main-memory management c) I/O management d) File management e) Seco

Explain the novell netware, Explain the Novell NetWare     NetWare does...

Explain the Novell NetWare     NetWare doesn't really have the concept of processes in the architecture, as  the most closely associated element in the NetWare  environment to

CPU Scheduing FCFS, Assume that P A , P B and P C are three distinguished p...

Assume that P A , P B and P C are three distinguished program s . When P A is executed, it needs 10 ticks to complete its execution and it forks new processes executing P B at tick

What are overlays, What are overlays? To enable a process to be larger ...

What are overlays? To enable a process to be larger than the amount of memory allocated to it, overlays are used. The idea of overlays is to keep in memory only those instructi

Define analysis for syntactic structure of source statement, An analysis, w...

An analysis, which defines the syntactic structure of the source statement, is known as Syntax analysis defines the syntactic structure of the source statement

Explain single-user systems, We have stressed the need for an operating sys...

We have stressed the need for an operating system to make efficient use of the computing hardware. When is it appropriate for the operating system to forsake this principle and to

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