四位数码管动态显示c语言程序

/这是一个四位数码管动态显示c语言程序，每隔一秒加一，直至加到9999为止/使用时需采用锁存器#include #includestdio.hunsigned char code LED=0xc0, 0xf9, 0xa4, 0xb0, 0x99, 0x92, 0x82, 0xf8, 0x80, 0x90;unsigned char LEDbuff=0xff,0xff,0xff,0xff;/定义数码管的位选段sbit SEG_bit_1 = P01;sbit SEG_bit_2 = P02;sbit SEG_bit_3 = P03;sbit SEG_bit_4 = P04;unsigned int cnt=0;unsigned int sec =0;unsigned int mini=0;unsigned int hour=0;unsigned char i=0;/*void delay(unsigned int z )unsigned int x,y; for(x=z;x0;x-) for(y=110;y0;y-);*/void interrupttimer0() interrupt 1 /*设置中断函数*/TH0=0xfc;TL0=0x18;cnt+;/P1=0x80;/delay(1);switch(i)case 0: SEG_bit_1 = 0;SEG_bit_4 = 1;P1=LEDbuff0;i+;break;case 1: SEG_bit_4 = 0;SEG_bit_3 = 1;P1=LEDbuff1;i+;break;case 2: SEG_bit_3 = 0;SEG_bit_2 = 1;P1=LEDbuff2&;i+;break;case 3: SEG_bit_2 = 0;SEG_bit_1 = 1;P1=LEDbuff3;i=0;break;default:break;/*void serial_init() /TMOD = 0x20;/定时器T/C1工作方式2SCON = 0x50;/串口工作方式1，允许串口接收（SCON = 0x40 时禁止串口接收）TH1 = 0xF3;/定时器初值高8位设置TL1 = 0xF3;/定时器初值低8位设置PCON = 0x80;/波特率倍频（屏蔽本句波特率为2400）TR1 = 1;/定时器启动 */void main() /serial_init(); /串口初始化 /TMOD=0x21; /*设置定时器*/TMOD=0x01;TH0=0xfc;TL0=0x18;TR0=1;EA=1; /*设置中断*/ET0=1;while(1)if(0=TF0)if(cnt=1000)cnt=0;sec+;if (sec=60) sec=0;mini+; if (mini=60) mini=0;hour+; if (hour=24) hour=0;LEDbuff0=LEDsec%10; /*设置数码管显示位*/LEDbuff1=LEDsec/10%10;LEDbuff2=LEDmini%10;LEDbuff3=LEDmini/10%10;/ TI=1; /使用printf函数前须先将发送标志位