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

Flowcharting, Flowcharting: Flowcharting: A Flowchart is a graphical r...

Flowcharting: Flowcharting: A Flowchart is a graphical representation of an algorithm. It can be compared to the blueprint of a building. Just as a building contractor refers

What is fragmentation? explain its significance, Question A What is fragme...

Question A What is fragmentation? Explain its significance Question B Briefly discuss the functions of transport layer Question C What is CIDR? Explain Question D W

Explain digital multiplexers, Problem 1 Perform the following conversio...

Problem 1 Perform the following conversion a. (ABE) 16 =() 2 b. (101011) 2 =() 10 2 Explain how full adder adds three bits 3 Explain digital multiplexers

Data structure and algorithms, need help with global alignment and local al...

need help with global alignment and local alignment for the sequences X and Y

System hardware, what problems does one encounter when you have more pipeli...

what problems does one encounter when you have more pipelines?

#title, what is HMtl stands for, meaning and purpose

what is HMtl stands for, meaning and purpose

Define Multilevel Queue Scheduling?, • A multilevel queue scheduling algori...

• A multilevel queue scheduling algorithm divides the ready queue in several separate queues, for example • In a multilevel queue scheduling processes are lastingly assigned to one

How to avoid race conditions with critical section?, • The key to preventi...

• The key to preventing problem involving shared storage is get some way to prohibit more than one process from reading and writing the shared data concurrently. That part of the p

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