//Toggling Bit 7 of P2 on MDE 8051 Trainer
//Tested by Mazidi 
//Modified from Example 7-12 in chapter 7 of the "8051 Microcontroller" textbook by Mazidis & McKinlay 
//Connect an LED to P2.7 and see it toggles
//Or connect a buzzer to P2.7 pin and hear buzzer sound 
#include <reg51.h>
sbit mybit = P2^7;
void MSDelay(unsigned int);
	
void main(void)
{
  while(1)
    { 
      mybit=1;
      MSDelay(250);
      mybit=0; 
     MSDelay(250);
	
    }
 }  
  

void MSDelay(unsigned int itime)
  {
    unsigned int i, j;
    for(i=0;i<itime;i++)           //Modify this this delay to see
      for(j=0;j<1275;j++);         //the rate of toggling (or  hear different buzzer sound)
  }