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

., why first generation computers are better than fourth generation compute...

why first generation computers are better than fourth generation computers

Algorithms, 1. In each of the following situations, indicate whether f = O...

1. In each of the following situations, indicate whether f = O(g), or f = O(g), or both (in which case f = T(g)). Briefly explain why. (a) f(n)=10n5 +8n2,g(n)=20n4 +7n3 +300 (b) f

Central processing unit, Central Processing Unit Microprocessor Th...

Central Processing Unit Microprocessor The microprocessor is an important component in the CPU. It is the unit which processes the instructions depending on its capability

Explanation of characteristics of computers, Problem 1. Briefly explain...

Problem 1. Briefly explain on the characteristics of computers Explanation of characteristics of computers 2. Write a note on Cache Memory Note on Cache Memor

Basic description of a computer system, The main components of a computer ...

The main components of a computer system at a basic level Computer System We call computer system to the whole configuration of a computer, as well as the peripheral units and the

Electronic mail , Electronic mail is another PC to PC and PC to mainframe ...

Electronic mail is another PC to PC and PC to mainframe data exchange. If you subscribe to an electronic mail service, it will enable your PC to gain access to a 'mailbox' on a ma

Inside earth, What are two types of evidence geologists use to learn about ...

What are two types of evidence geologists use to learn about Earth''s interior.?

Describe symbols chart in assembly process ?, SYMBOLS CHART Every one of t...

SYMBOLS CHART Every one of the parts on code line in assembler is known as token, for instance on the code line: MOV AX, Var We comprise three tokens, the MOV instruction, the AX o

Digitalelectronics, what duality principle and huntington postulates

what duality principle and huntington postulates

Utility , what are the definition?

what are the definition?

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages