Execute a command in operating system, Basic Computer Science

Assignment Help:

Execute a command in operating system:

In order to execute a command OS does the

following steps:

It accepts a command from a user through mouse clicks or from the keyboard. Through a port number it is able to recognize what is the source of input.
It must interpret these commands and take actions accordingly.
It must provide a file system that can interpret the name of the program being requested and determine the location of the file on secondary storage device for example.
It must read the appropriate blocks from the device into memory. Only then can the operating system transfer control to the program being executed.

In case of multiple programs executing simultaneously, CPU does some extra jobs to allot the CPU time in an equitable way to each program, and also maintain the integrity of each program, etc.

Related Discussions:- Execute a command in operating system

cpp programming assignment help, wrap that computes a customer water bill....

wrap that computes a customer water bill. The bill include Rs.100 water demand charge + a consumption charge of Rs.1.5 for every thousand gallons used. Consumption is figured from

Briefly explain the shutter speed, Question 1 Write a note on transition, ...

Question 1 Write a note on transition, transition types & Features Question 2 Describe the different types of lens used in film shooting Question 3 Briefly explain

Functions, difference between recursion and iteration

difference between recursion and iteration

Science is scienceritic, 2*aC=

2*aC=

SOFTWARE, main task of sofware developper

main task of sofware developper

Discuss about the descriptor classes, Question 1 List down any six feature...

Question 1 List down any six features of a Smartphone Question 2 Give a brief note on a) Internal Flash Disk. b) Use of C++ in Symbian OS Question 3 What are the naming

Many to many relationships, Each Many to Many relationship type maps into t...

Each Many to Many relationship type maps into the Table. The primary key of this relevant is the combination of the primary keys of the participating entity types. These are also c

Disaccharide sugars, Disaccharide Sugars: Disaccharide - Carbohydrate made...

Disaccharide Sugars: Disaccharide - Carbohydrate made up of two monosaccharides (a sugar dimer) Condensation reaction between 2 monosaccharides Linkage between

Definition of User-Level Thread?, User-level threads apply in user-level li...

User-level threads apply in user-level libraries, before via systems calls, so thread switching does not require to call operating system and to cause interrupt to the kernel. Actu

Application-specific multiprocessors, Application-Specific Multiprocessors ...

Application-Specific Multiprocessors Although this book details a variety of similar architectures, it specializes in the design of such architectures in the perspective of par

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages