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

Algorithms and pseudocodes.., how do you write the algorithm and the pseudo...

how do you write the algorithm and the pseudo code for cramer''s rule in visual basic.

Cryptography, Assume |s1|=|s2|=n and consider the functions defined, for an...

Assume |s1|=|s2|=n and consider the functions defined, for any s1 and s2, as: (a) G1(s1,s2)=s1 xor s2, (b) G2(s1,s2)=(s1, s2, s1 xor s2). We have that: A. G1 and G2 are pseudo-ra

Hypertext markup language (html), HTML is a Formatting language which is mo...

HTML is a Formatting language which is most commonly used for web documents.

Instructions for cycles: loop, They transfer the process flow, provisionall...

They transfer the process flow, provisionally or totally, to a destiny, replicating this action until the counter is zero. LOOP LOOPE LOOPNE LOOP INSTRUCTION reason: To produce a c

C, wap to print padovan string in c

wap to print padovan string in c

The microprocessor, THE MICROPROCESSOR The three fundamental units, whi...

THE MICROPROCESSOR The three fundamental units, which comprise a CPU, have now been discussed in general terms.  So too has a microprocessor, because a microprocessor can be de

Block matching algorithm, I am using block matching algorithm to get the mo...

I am using block matching algorithm to get the motion vectors, now, how can I get the depth map/depth value from the motion vectors?

Application software, APPLICATION SOFTWARE Application Software ...

APPLICATION SOFTWARE Application Software generally is the software which is used to generate customized applications for the clients. Ex: Word Star, Lotus 1-2-3, Ms-

Noemalization.., what is means with respect to software engineering?

what is means with respect to software engineering?

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