AT89S51单片机P1口接有1个7段LED数码管,初始显示为0。外部中断输入引脚...答:程序如下:include<reg51.h> unsigned char code tab[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,};unsigned char n; //按键计数 void main(){ EX0=1;IT0=1; //这是IT0=1,是下降沿中断 EA=1;n=0;while(1){ P1=tab[n];} } void int0() interrupt 0 //...
用51单片机程序显示3位7段数码管,求具体程序答:假设为共阴极数码管,驱动输入端接单片机P1口,共阴极接P2口的0.1.2.脚。我的程序如下,当前显示数字123 include <reg52.h> typedef unsigned char uint8;typedef unsigned int uint16;typedef long int uint32;code uint8 number[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f...
51单片机控制数码管循环显示0-9程序答:采用共阴极LED数码管,51单片机P1口输出数据:ORG 0000H JMP MAIN ORG 0100H MAIN:MOV DPTR,#TAB MOV R1,#00H DISP:MOV A,R1 MOVC A,@A+DPTR MOV P1,A LCALL DELAY INC R1 CJNE R1,#0AH,DISP SJMP TAB: DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FHDELAY: MOV R4,#...