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

Constant , Constant: In contrast to a variable, which is used as ident...

Constant: In contrast to a variable, which is used as identifier for a value and which can change, constants are identifiers that are used for values, which cannot be changed.

Numerical data , i don''t understand how to create a program using double, ...

i don''t understand how to create a program using double, int, float, short etc

Computer architecture, Consider a CPU that implements two parallel fetch-ex...

Consider a CPU that implements two parallel fetch-execute pipelines for superscalar processing. Show the performance improvement over scalar pipeline processing and no-pipeline pro

Goals of autonomous rational agents, Goals of Autonomous Rational Agents: A...

Goals of Autonomous Rational Agents: Artificial intelligence One possible way to improve an agent's performance is to enable it to have some kind of details about what it is tr

Explain the characteristics of vector processing, Question 1 Draw the bloc...

Question 1 Draw the block diagram of von Neumann Architecture and explain about its parts in brief Question 2 Draw the block diagram of Intel 8085 CPU organization and explai

Analyze the complexity of dijkstra''s algorithm, QUESTION (a) Given the...

QUESTION (a) Given the graph as shown in figure, apply Lagrangian technique to complete the table assuming μ=1 and T=14                        Path P

Uniform path cost search-artificial intelligence, Uniform Path Cost Search-...

Uniform Path Cost Search-Artificial intelligence A breadth first search will search the solution with the shortest path length from the first state to the goal state. Though, t

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