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
ASCII code:  An alphanumeric code has to represent 10 decimal digits, 26 alphabets and certain other symbols such as punctuation marks and special characters. Therefore, a min

Problem a. Compare between file processing system and DBMS >>This is a comparison of DBMS with file processing system which the answer has to be searched from the GOOGLE an

QUESTION (a) Consider a system with input x[n] and output y[n] that satisfy the difference equation:                                   Y[n] = x[n] + 0.5 x[n-2] + 0.2 x[n+1]

What is a Structure?

what is multiplaxer and truth table, digram

Use the skills that you have learned in Photoshop to create the following images that could be used in your upcoming web project. All images should be cohesive and complement each

2000word how much

INTERNET Internet: The global network of computers linked by exclusive and regular phone lines and microwave and satellite signals. Extranet: An extranet is the part of

Development of Personnel Computer Operating System: The next important breakthrough in computer use occurred in 1982, with the introduction of the IBM personal computer. The I

Need of operating system: What kind of facilities operating system provides to the users and programs: The operating system provides interfaces for the user (keyboard, m