F.rar_点阵扫描原理

/******************************************************************************* *标题： 实验翻页显示（0~5不用定时器） * *作者：龙的传人 * *公司：普中科技 * *论坛：www.prechin.net * ******************************************************************************** *描述：通过本例程能使读者更好了解点阵的扫描原理 * *连接：JP11和J20，JP10和J12用8排线相连 * * * * 希望学员认真消化本例程 * *******************************************************************************/ #include<reg51.h> unsigned int timecount; unsigned char code tab[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f}; unsigned char code shuzu[]={ 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 }; void delay(unsigned int t) { while (t--) {;} } void main(void) { unsigned char i,j,a; while(1) { for(i=0;i<=5;i++) for(a=0;a<=80;a++) //移动速度 { for(j=0;j<=7;j++) { P0=shuzu[8*i+j]; P2=tab[j]; delay(70); } } } }