Why Modern OS are interrupt driven?Give an example

Answers were Sorted based on User's Feedback

Why Modern OS are interrupt driven?Give an example..

Answer / shankar

An interrupt driven device sends an interrupt request to the computer, which is then serviced by Internet service routine(ISR).
To effectively manage many processes the core of operating system makes use of what is known as interrupts.
This is a signal to a processor indicating that an asynchronous event has occurred. Here the current sequence of instructions is temporarily suspended, and a sequence appropriate to the interruption is started in its place. Its purpose is to alert the operating system when any special event occurs so that it can suspend its current activity and deal appropriately with the new situation
Usually an interrupt gives a signal from a device attached to a computer or from a program within the computer that causes the main program that operates the computer (the operating system) to stop and figure out what to do next. Almost all personal (or larger) computers today are interrupt-driven - that is, they start down the list of computer instructions in one program (perhaps an application such as a word processor) and keep running the instructions until either (A) they can't go any further or (B) an interrupt signal is sensed. After the interrupt signal is sensed, the computer either resumes running the program it was running or begins running another program

Is This Answer Correct ?    16 Yes 8 No

Why Modern OS are interrupt driven?Give an example..

Answer / imrana

os is interrupt driven software this means that if there is no interrupt then the system will be die

Is This Answer Correct ?    8 Yes 1 No

Why Modern OS are interrupt driven?Give an example..

Answer / banavathvishnu

There are 3 types of OS
1. Interrupt driven
2. Polling
3. Event driven

In Interrupt driven OS CPU clock is handed over to
Interrupt only when the interrupt is occured.

In Polling, CPU clock should wait until an event is occured
is very expencise wrt to CPU clock.

Is This Answer Correct ?    15 Yes 17 No

Post New Answer

More C Interview Questions

class foo { public: static int func(const char*& p) const; }; This is illegal, why?

8 Answers   Google,

what is the use of macro program

1 Answers   TCS,

34.what are bitwise shift operators? 35.what are bit fields? What is the use of bit fields in a structure declaration? 36.what is the size of an integer variable? 37.what are the files which are automatically opened when a c file is executed? 38.what is the little endian and big endian? 39.what is the use of fflush() function? 40.what is the difference between exit() and _exit() functions? 41.where does malloc() function get the memory? 42.what is the difference between malloc() and calloc() function? 43.what is the difference between postfix and prefix unary increment operators?

0 Answers  

write a program to display the frequency of each element in a given array in c language

1 Answers  

plssssss help !!....using array.. turbo c.. create a program that will accept number of words to be consored. .a word must not exceed 10 characters long .the text to be entered will be no longer than 200 characters .there will be no 10 words example: enter number of words to be censor: 5 enter words to censor: windows office microsoft bill gates enter text to censor: bill gates founded microsoft and makes office and windows sample output: <consored> <censored> founded <censored> and makes <censored> and <censored>

1 Answers  

wat s the meaning of (int *)p +4;

2 Answers  

why do we use # in c-language?

1 Answers  

Define function pointers?

1 Answers  

In which category does main function belong??

5 Answers  

What is the output of the program #include<stdio.h> #include<conio.h> void main() {0 int i,j=20; clrscr(); for(i=1;i<3;i++) { printf("%d,",i); continue; printf("%d",j); break; } getch(); }

4 Answers   CTS, Oracle,

I have written a pro*C program to fetch data from the cursor. where in i have used the concept of BULK FETCH.... each FETCH statement is taking lots of time to fetch specified number of rows at...

0 Answers  

A.C func() { pritnf(" in fuction %d",MACRO); } MAIN.c testfunc() { #define MACRO 10 printf("in test function %d", MACRO); } main() { printf("in main %d",MACRO); func(); testfunc(); getch(); }

2 Answers   Wipro,