四位数码管动态显示c语言程序

/这是4位数码管动态显示c语言程序，到9999为止，每秒增加1/使用时需要闩锁#include#includestdio.h Unsigned char code led =0xc0，0xf9，0xa4，0xb 0，0x99，0x92，0x82，0xf8，0x80，0x 90 ；Unsigned char led buff =0xff，0xff，0x ff ；/定义数码管的位元选取Sbitseg _ bit _ 1=P0 1Sbitseg _ bit _ 2=P0 2Sbitseg _ bit _ 3=P0 3Sbitseg _ bit _ 4=P0 4unsigned 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中断时间0()中断1/*中断函数设置*/TH0=0xfcTL0=0x18Cnt/P1=0x 80；/delay(1)；交换机(I)case 03360 SEG _ bit _ 1=0；SEG _ bit _ 4=1；P1=led buff0；I；Breakcase 13360 SEG _ bit _ 4=0；SEG _ bit _ 3=1；P1=led buff1；I；Breakcase 2330 seg _ bit _ 3=0；SEG _ bit _ 2=1；P1=led buff2；I；Breakcase : SEG _ bit _ 2=0；SEG _ bit _ 1=1P1=led buff3；I=0；BreakDefault:break/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *Void serial_init()/TMOD=0x 20；/计时器T/C1工作方式2SCON=0x50/串行端口如何工作1，允许串行端口侦听(SCON=0x40不允许接收串行端口)TH1=0xF3/设定计时器初始值高度8位元TL1=0xF3/计时器初始值低8位设置PCON=0x80/波特率倍频(本文的波特率为2400)TR1=1；/启动计时器* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *Void main()/serial _ init()；/初始化串行端口/TMOD=0x 21；/*计时器设置*/TMOD=0x01TH0=0xfcTL0=0x18TR0=1；EA=1；/*中断设置*/ET0=1；While(1)If(0=TF0)If(cnt=1000)CNT=0；秒；If (sec=60) sec=0；迷你If (mini=60) mini=0；Hourif(hour=24)hour=0；led buff0=ledsec；/*设定数位管显示位元*/led buff1=ledsec/10；led buff2=ledmini；led buff3=ledmini/10；/TI=1；/printf函数之前，必须将发送标