Execute a command in operating system, Basic Computer Science

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.

 

Posted Date: 10/23/2012 4:13:01 AM | Location : United States







Related Discussions:- Execute a command in operating system, Assignment Help, Ask Question on Execute a command in operating system, Get Answer, Expert's Help, Execute a command in operating system Discussions

Write discussion on Execute a command in operating system
Your posts are moderated
Related Questions
implement your own hashset

Here are the more specific requirements and the related points - use the below as a check-off list when you make your presentation.  Please note . . . many of the requirements are

For the formation of a program it is necessary to follow five steps: Design of the algorithm, stage the problem to be solved is reputable and the best solution is proposed, creatin

WAP TO ACCEPT MARKS OF THREE SUBJECT FOR STUDENT & CALCULATE TOTAL MARKS AND PERCENTAGE


WCDMA – FDD technology Multiple access technology is wideband CDMA (WCDMA) All cells at same carrier frequency Spreading codes used to separate cells and users Signal bandwidth 3.8

Historical Background The brief history of the growth of computers is given below: Abacus:   It was the first mechanical device developed approximately 3,000 year


Python allows single (''), double (") and triple ('''''' or """) quotes to indicate string literals, as long as the similar type of quote starts and ends the string. The triple quo

You are to code a C++ program that will read the file IntList into an integer array. There are no more than 20 integers in the file. After all of the data is read into the file,