#include #define SEGPORT P0sbit bit_select = P2 ^ 0; //p2 ^ 0控制位選鎖存器，位選鎖存器選定 數碼管 sbit seg_select = P2 ^ 1; //p2 ^ 1控制段選鎖存器，段選鎖存器選定 數碼管的內容（并顯示內容）。 unsigned char segdata[16] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71}; unsigned char bitdata[8] = {0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f}; unsigned char tempdata[8] = 0x0; unsigned char shi = 23; unsigned char fen = 59; unsigned char miao = 50; unsigned int count = 0;void display() //顯示刷新函數 {static unsigned char i = 0;SEGPORT = 0x0; //清屏操作，消除重影seg_select = 1;seg_select = 0;SEGPORT = 0xff;bit_select = 1;bit_select = 0;SEGPORT = bitdata[i]; //選定并顯示特定數碼管的內容bit_select = 1;bit_select = 0;SEGPORT = tempdata[i];seg_select = 1;seg_select = 0;i++;if(i == 8){i = 0;} }void timer0_init(void) //定時器中斷0，計算時間，優先級大于中斷1 {EA = 1;TMOD = 0x01;TH0 = (65536 - 2000) / 256;TL0 = (65536 - 2000) % 256;ET0 = 1;TR0 = 1; }void timer1_init(void) //定時器中斷1，顯示時間 {EA = 1;TMOD = 0x11;TH1 = (65536 - 2000) / 256;TL1 = (65536 - 2000) % 256;ET1 = 1;TR1 = 1; }void main() {timer0_init();timer1_init();while(1); }void timer0_isr() interrupt 1 { TH0 = (65536 - 2000) / 256;TL0 = (65536 - 2000) % 256;count++;if(500 == count){ count = 0;miao++;if(60 == miao){miao = 0;fen++;}if(60 == fen){fen = 0;shi++;}if(24 == shi){shi = 0;}}tempdata[0] = segdata[shi / 10];tempdata[1] = segdata[shi % 10];tempdata[2] = 0x40;tempdata[3] = segdata[fen / 10];tempdata[4] = segdata[fen % 10];tempdata[5] = 0x40;tempdata[6] = segdata[miao / 10];tempdata[7] = segdata[miao % 10]; }void timer1_isr() interrupt 3 {TH1 = (65536 - 2000) / 256;TL1 = (65536 - 2000) % 256;display(); }

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