NE555+74LS90+74LS08分频器的单片机频率计仿真与源码 -

#include<reg52.h>
#include<intrins.h>
typedef unsigned char u8;
typedef unsigned int u16;
typedef unsigned long int u32;
#define shumag P2
#define gongy P1
sbit RED_KHZ=P0^1;
sbit Blue_HZ=P0^0;
sbit fengmingqi=P0^7;
unsigned char code dofly_DuanMa[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
// 显示段码值0~9
unsigned char TempData[4];//存储显示值的全局变量
u8 second=0;
u32 sert=0;
u32 count=0;
u16 j=0;
u16 k=0;
void delay(u16 i)
{
while(i--);
}
void display()
{
u8 i;
for(i=0;i<3;i++)
{
gongy=i;
shumag=TempData[i];
delay(10);
shumag=0x00;
}
}
void Timer_init()
{
TMOD=TMOD|0X51;
TH0=0X3c;
TL0=0Xb0;
EA=1;
ET0=1;
ET1=1;
TR0=1;
TR1=1;
}
void main()
{
Timer_init();
while(1)
{
if(k==20)
{
count=count+TH1*256+TL1;
TempData[0]= dofly_DuanMa[count/100];
TempData[1]= dofly_DuanMa[count/10%10];
TempData[2]=dofly_DuanMa[count%10];
TH1=0;
TL1=0;
k=0;
}
if(count>=1000)
fengmingqi=0;
if(count<1000)
fengmingqi=1;
display();
}
}
void menter0() interrupt 1
{
TH0=0X3c+TH0;
TL0=0Xb0+TL0;
j++;
if(j==20)
{
k=j;
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