LED_Num.rar_单片机num

/***************************************************************************************** * * * LED点阵实验(流动显示1 2 3 4 5 6 7 8 9) * * * * * * * * 说明 通过P0 和 P2 作为点阵接口 * *要求学员掌握 LED点阵的工作原理和 各点阵脚的定义及接法，具体接线请参考接线说明 * *我们采用的LED点阵式是低功耗，在做实验时可以用单片机脚直接驱动 * ******************************************************************************************/ #include<reg51.h> unsigned char code tab[]={0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe,}; //列选通控制 unsigned char code digittab[18][8]={ {0x00,0x00,0x3e,0x41,0x41,0x41,0x3e,0x00}, //0 {0x00,0x00,0x00,0x00,0x21,0x7f,0x01,0x00}, //1 {0x00,0x00,0x27,0x45,0x45,0x45,0x39,0x00}, //2 {0x00,0x00,0x22,0x49,0x49,0x49,0x36,0x00}, //3 {0x00,0x00,0x0c,0x14,0x24,0x7f,0x04,0x00}, //4 {0x00,0x00,0x72,0x51,0x51,0x51,0x4e,0x00}, //5 {0x00,0x00,0x3e,0x49,0x49,0x49,0x26,0x00}, //6 {0x00,0x00,0x40,0x40,0x40,0x4f,0x70,0x00}, //7 {0x00,0x00,0x36,0x49,0x49,0x49,0x36,0x00}, //8 {0x00,0x00,0x32,0x49,0x49,0x49,0x3e,0x00}, //9 {0x00,0x00,0x7F,0x48,0x48,0x30,0x00,0x00}, //P {0x00,0x00,0x7F,0x48,0x4C,0x73,0x00,0x00}, //R {0x00,0x00,0x7F,0x49,0x49,0x49,0x00,0x00}, //E {0x00,0x00,0x3E,0x41,0x41,0x62,0x00,0x00}, //C {0x00,0x00,0x7F,0x08,0x08,0x7F,0x00,0x00}, //H {0x00,0x00,0x00,0xFF,0xFF,0x00,0x00,0x00}, //I {0x00,0x7F,0x10,0x08,0x04,0x7F,0x00,0x00}, //N {0x7C,0x48,0x48,0xFF,0x48,0x48,0x7C,0x00} //中 }; unsigned int timecount1 , timecount2; //定义的变量 unsigned char cntx , cnty ; //cntx列控制数的变量 cnty用来控制 字符与字符之间的切换 void main(void) { cnty=0; while(1) { if(cnty<18) //红色 { P1=0xFF; //列选通都关闭掉 P2=tab[cntx]; // 列线 P0=digittab[cnty][cntx]; // 行线 } else //绿色 { P2=0xFF; //红色的列选通都关闭掉 P1=tab[cntx]; // 列线 P0=digittab[cnty-18][cntx]; // 行线 } //用于控制动态扫描的速度 if(++timecount1>=50) { timecount1=0; if(++cntx>=8) cntx=0; } //用于控制动字符间的切换速度 if(++timecount2>=20000) { timecount2=0; if(++cnty>=36)cnty=0; } } }