keil写程序 单片机二位数码管显示倒计时答:uchar code num[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};//共阴数码管0~9的十六进制码 void delay(uchar xms) //软件延时 { int i,j;for(i=xms;i>0;i--)for(j=125;j>0;j--);} void display(int tens,ones) //用来显示数字的函数,显示此时的十...
如何用单片机和数码管制作倒计时表答:CJNE A,#100,T0E MOV R2,#0 MOV A,R0 JZ T003 DEC R0 SJMP T0ET003: MOV A,R1 JZ T004 DEC R1 MOV R0,#9T0E: RETIT004: CLR TR0 RETITABLE: ; 共阴极数码管显示代码表 DB 3FH,06H,5BH,4FH,66H ;01234 DB 6DH,7DH,07H,7FH,6FH ;56789END ...
...单片机60.00到00.00倒计时程序 4位数码管显示 C语...答:AT89C51单片机60.00到00.00倒计时程序 4位数码管显示 C语... ncludereg52.h> #define uchar unsigned char #define uint unsigned int uchar num,t; sbit dula=P2^6; //段选跟位选 sbit wela=P2^7; uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; //共阴数码管 ...