2-1.c

一些简单的c51程序

#include <reg51.h>
#include <stdio.h>
unsigned char time,vol;                  
unsigned int total,n;

sbit v_input=P0^0;
void main()
{
    TL0=0x24;
	TH0=0xfb;	
	time++;
	if ((time++)>10) 
{
		v_input=0;
        total+=time;
		time=0;
		if ((++n)>10) 
{	
			n=0;
			vol=total/10;	
			total=0;
		}
        v_input=1;
	printf("ok");
		}
}