下载后可任意编辑 AT89C51 单片机开发板程序1 个 LED 数码管静态显示（0-9）include#define uchar unsigned char#define uint unsigned intuchar i;uchar code a[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};void delay(uint z);void main(){while(1){for(i=0;i<10;i++){ P2=0xfe;P0=a[i];delay(1000);}}}void delay(uint z){uint x,y;for(x=z;x>0;x--)for(y=122;y>0;y--);}LED 数码管显示（0-99）#includeunsigned char count,num;unsigned char code table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};void main(){P2=0xfe;IE=0x82;TMOD=0x01;TCON=0x30;while(1);}void TOINT() interrupt 1{下载后可任意编辑TH0=0xd8;TL0=0xf0;if(P2&1)P1=table[num/10];else P1=table[num%10];P2^=3;if(++count<100)return;count=0;if(++num>99)num=0;}定时控制一只闪亮的灯#include#define uchar unsigned char#define uint unsigned intuint n;sbit led=P0^0;void main (){TMOD&=0xf1;TMOD|=0x01;TH0=(65536-10000)/256;TL0=(65536-10000)%256;EA=1;ET0=1;TR0=1;while(1){}}void timer0() interrupt 1{TH0=(65536-10000)/256;TL0=(65536-10000)%256;n++;if(n==100){n=0;led=~led;}}用独立键盘显示 LED 数码管（1-4）#include#define uchar unsigned char#define uint unsigned intuchar code a[]={0xc0,0xf9,0xa4,0xb0,0x99,0xff};下载后可任意编辑void delay(uint z);void main(){ uchar b,c;c=5;while(1){P0|=0x0f;b=P0;b&=0x0f;if(b!=0x0f){delay(20);P0|=0x0f;b=P0;b&=0x0f;if(b!=0x0f){switch(b){case 0x0e:c=1;break;case 0x0d:c=2;break;case 0x0b:c=3;break;case 0x07:c=4;break;default:c=0;}}}P1&=0xfe;P2=a[c];}}void delay(uint z){uint x,y;for(x=z;x<0;x--)for(y=122;y<0;y--);}用矩阵键盘显示 LED 数码管（0-9，A-F）#include#define uint unsigned int#define uchar unsigned charuchar code a[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,下载后可任意编辑0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,0xff};void delay(uint z);sbit hang1=P0^3;sbit hang2=P0^2;sbit hang3=P0^1;sbit hang4=P0^0;void main(){uchar b,c;c=16;while(1) {hang1=0;hang2=1;hang3=1;hang4=1; P0...
