How to interface dc motor using 8051 with pwm

how to interface dc motor with 8051.....i want to use the concept of PWM ..........I don't know how to use that can any one please tell me how to program for that ....or please provide any circuits for that

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#include <reg52.h> /* special function register declarations */
/* for the intended 8051 derivative */

#include <stdio.h> /* prototype declarations for I/O functions */


//L293D Pin Defines

sbit E1 = P2^0;
sbit I1 = P2^1;
sbit I2 = P2^2;

void Delay(void); //Function prototype declaration



void main (void) {
E1 = 1; //Set E1 pin High to Enable Channel of L293D

while(1) //End less while so that program never ends
{
//Rotate in One Direction
I1 = 0;
I2 = 1;
Delay();
Delay();
Delay();
Delay();

//Rotate in Other Direction
I1 = 1;
I2 = 0;
Delay();
Delay();
Delay();
Delay();

}
}

void Delay(void)
{
int j;
int i;
for(i=0;i<10;i++)
{
for(j=0;j<10000;j++)
{
}
}
}

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...............

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i am using this circuit only ..........

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and programs

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for the above circuits....

Okay!
The first, You can find a simply motor driven chip.I think you have found it(I uesd L298N). I think they are nearly.
The second,You can find some typical circuits.You can consult the circuit..
The Third,If you want use a Micontrollers to control the montor.You'll be able to search the Internet for these keywords "light coupling isolation""the dead band".
I am also a beginer.
If I say wrong.Please forgive me.
Hope this can help you!