#include<reg52.h>
#define uint unsigned int
uint i,j;
void main ()
{ while(1)
{ P1=0xaa;
for(i=1000;i>0;i--)
for(j=110;j>0;j--);
P1=0x55;
for(i=1000;i>0;i--)
for(j=110;j>0;j--);
}
}
1、3、5、7数码管先亮一秒左右而后熄灭2、4、6、8点亮，循环。

#include<reg52.h>
#define uint unsigned int
sbit a=P1^0 ;
void delaying();
void main ()
{ while(1)
{ a=0;
delaying();
a=1;
delaying();
}
}
void delaying()
{ uint i,j;
for(i=1000;i>0;i--)
for(j=110;j>0;j--);
}
引入子函数体 让第一个二极管间隔500ms左右点亮一次

#include<reg52.h>
#define uint unsigned int
sbit a=P1^0 ;
void delayingms(uint);
void main ()
{ while(1)
{ a=0;
delayingms(200);
a=1;
delayingms(800);
}
}
void delayingms(uint xms)
{ uint i,j;
for(i=1000;i>0;i--)
for(j=110;j>0;j--);
}
第一个二极管亮200ms 灭800ms 循环！！！

#include<reg52.h>
#define uint unsigned int
sbit a=P1^0 ;
sbit b=P1^1 ;
sbit c=P1^2 ;
sbit d=P1^3 ;
sbit e=P1^4 ;
sbit f=P1^5 ;
sbit g=P1^6 ;
sbit h=P1^7 ;
uint i,j;
void delay1();
void main ()
{ while(1)
{ a=0;
delay1();
a=1;
delay1();
b=0;
delay1();
b=1;
delay1();
c=0;
delay1();
c=1;
delay1();
d=0;
delay1();
d=1;
delay1();
e=0;
delay1();
e=1;
delay1();
f=0;
delay1();
f=1;
delay1();
g=0;
delay1();
g=1;
delay1();
h=0;
delay1();
h=1;
delay1();
}
}
void delay1()
{ uint i,j;
for(i=1000;i>0;i--)
for(j=110;j>0;j--);
}
流水灯

#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit dula=P2^6;
sbit wela=P2^7;
uchar num;
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0
x39,0x5e,0x79,0x71};
void delay (uint x);
void main()
{ wela=1;
P0=0xfe;
wela=0;
while(1)
{
for(num=0;num<10;num++)
{ dula=1;
P0=table[num];
dula=0;
delay(1000);
}
}
}
void delay(uint x)
{ uint i,j;
for(i=x;i>0;i--)
for(j=100;j>0;j--);
}

#include<reg52.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
uchar a ,num;
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x79,0x5e,0x39,0x7c,0x77,0x6f,0x7f,0x07,0x7d,0x6d,0x66,0x4f,0x5b,0x06,0x3f};
sbit beep=P2^3;
sbit dula=P2^6;
sbit wela=P2^7;
void delay(uint z);
void main()
{ wela=1;
P0=0xfe;
wela=0;
for(num=0;num<31;num++)
{ dula=1;
P0=table[num];
dula=0;
delay(1000);
}
a=0xfe;
while(1)
{P1=a;
beep=0;
delay(500);
beep=1;
P1=0xff;
delay(500);
a=_crol_(a,1);
}
}
void delay(uint z)
{ uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
数码管显示0~F再由F~0，之后流水灯点亮，亮的同时启动蜂鸣器。I

#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit dula=P2^6;
sbit wela=P2^7;
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
void delay(uint);
void main()
{dula=1;
P0=table[6];
dula=0;
P0=0xff;
wela=1;
P0=0xfe;
dula=0;
delay(1) ;
dula=1;
P0=table[5];
dula=0;
P0=0xff;
wela=1;
P0=0xfd;
dula=0;
delay(1) ;
dula=1;
P0=table[4];
dula=0;
P0=0xff;
wela=1;
P0=0xfb;
dula=0;
delay(1) ;
dula=1;
P0=table[3];
dula=0;
P0=0xff;
wela=1;
P0=0xf7;
dula=0;
delay(1) ;
dula=1;
P0=table[2];
dula=0;
P0=0xff;
wela=1;
P0=0xef;
dula=0;
delay(1) ;
dula=1;
P0=table[1];
dula=0;
P0=0xff;
wela=1;
P0=0xdf;
dula=0;
delay(1) ;
}
void delay(uint z)
{uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
数码管动态显示654321I

#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar num;
uint i,j;
sbit rs=P3^5;
sbit wr=P3^6;
sbit lcden=P3^4;
sbit dula=P2^6;
sbit wela=P2^7;
uchar code table1[]="I LOVE YOU";
uchar code table2[]="STEFANIE SUN";
void delay(uint x)
{for(i=x;i>0;i--)
{
for(j=120;j>0;j--);
}
}
void write_com(uchar com)
{rs=0;
wr=0;
lcden=0;
P0=com;
lcden=1;
delay(5);
lcden=0;
}
void write_data(uchar dat)
{rs=1;
wr=0;
lcden=0;
P0=dat;
lcden=1;
delay(5);
lcden=0;
}
void init()
{write_com(0x38);
write_com(0x0e);
write_com(0x06);
write_com(0x01);
write_com(0x80+0x10);
}
void main()
{P0=0;
dula=0;
wela=0;
init();
for(num=0;num<10;num++)
{
write_data(table1[num]);
delay(20);
}
write_com(0x80+0x53);
for(num=0;num<12;num++)
{
write_data(table2[num]);
delay(20);
}
for(num=0;num<16;num++)
{
write_com(0x18);
delay(200);
}
while(1);
}
从左至右流动显示“I LOVE YOU STEFANIE SUN”直至稳定。

#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
uint t;
sbit lcd=P1^0;
void main()
{ t=0; //赋初值t为0
ET0=1; //定时器0中断允许寄存器IE开关打开
TMOD=0x01; //定时器0工作方式为1
TH0=(65536-50000)/256; //赋定时器高八位初值
TL0=(65536-50000)%256; //赋定时器第八位初值
TR0=1; //启动定时器0
EA=1;
lcd=0;
while(1)
{ if(t==20)
{
t=0;
lcd=~lcd;
}
}
}
void timer0() interrupt 1
{ TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
t++;
}

#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
uint t;
uchar a;
void main()
{ EA=1;
EX0=1;
IT0=1;
a=0xaa;
while(1)
{
P1=a;
}
}
void inter0() interrupt 0
{
a=0x55;
}

ORG 0000H;
SJMP START;
ORG 0030H;
START: MOV SP,#60H;
MOV P1,#0FFH;
MAIN: CLR P1.0;
CALL DELAY;
SETB P1.0;
CALL DELAY;
SJMP MAIN;
DELAY: MOV R0, #250;
D2: MOV R1,#250;
D1: DJNZ R1,D1;
DJNZ R0,D2;
RET
END
点亮二极管 延时 熄灭 延时 点亮。。。。