键盘与显示实验程序c语言 51单片机按键控制数码管程序

单片机数码管应用,数码管扫描

#include

#define uint unsigned int

#define uchar unsigned char

uchar c;

sbit p10=P1^0;

sbit p11=P1^1;

sbit p12=P1^2;

sbit p13=P1^3;

sbit p14=P1^4;

sbit p15=P1^5;

sbit p16=P1^6;

sbit p17=P1^7;

void delay(uint z);

int b[]={0,1,2,3,4,5,6,7};//设置每一位显示的数字

unsigned char code Tab[]={0xc0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,

0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E};//共阳极数码管 int a[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};

void main()

{

EA=1;

EX0=1;

IT0=1;

P1=0xff;

while(1)

{

for(c=0;c<8;c++)//数码管扫描显示

{

P2=a[c];

P0=Tab[b[c]];

delay (1);

}

}

}

void delay(uint z)

{

uint a,b;

for(a=z;a>0;a--)

for(b=110;b>0;b--);

}

int_0()interrupt 0