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

Introduction to computer, Computer: People call a lot of things, compu...

Computer: People call a lot of things, computers. Some of them are cheap, but can only process numerical information. Such devices would better be described as 'calculators' r

Telecommunications, Telecommunications: 'Data communications', 'Commun...

Telecommunications: 'Data communications', 'Communications technology', 'Computer telecommunications', Compunications', 'Telecomputing', etc., are just some of the terms we co

Rooted tree, Ask qu The figure below shows a rooted tree, 756_Find the hei...

Ask qu The figure below shows a rooted tree, 756_Find the height.png 1.1. Find the height/level of the tree as shown above?estion #Minimum 100 words accepted#

Computer Literacy Assignment Task, Assignment Task: You are required to dev...

Assignment Task: You are required to develop working solutions in Excel that will manage the annual budget, current month’s inventory, and a list of the current month’s transaction

Logic instructions , They are used to act upon logic operations on the oper...

They are used to act upon logic operations on the operators. AND OR, NEG NOT TEST XOR AND INSTRUCTION Function: It acts upon the conjunction of the operators bit by bit. Syntax: A

Message quality and quantity, Message Quality and Quantity: Quality of...

Message Quality and Quantity: Quality of transmission is a very important .consideration in telecommunication. Voice communication can use a narrow bandwidth, which means the

What are the features of microprocessor ?, Previously two sections the fund...

Previously two sections the fundamentals of the workings and architecture of the central processing unit has been explained. There has been a common look at easy processor architec

Digital camera , Digital Camera: A Digital camera is an electronic dev...

Digital Camera: A Digital camera is an electronic device which takes video or still photographs or both, digitally by recording images via an electronic image sensor. Digital

Open systems interconnection, Open Systems Interconnection (OS1): As t...

Open Systems Interconnection (OS1): As there are many different protocols for LANs and WANs, communication between two different systems can be difficult. The International St

Operating system services, Operating system services: In this section ...

Operating system services: In this section we consider basic services supported by an operating system. There are many building blocks to be considered, not all of which will

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