第七届秦皇岛单片机大赛基础练习.doc

（595控制的）8个灯流水，若按下S4立即反向，若按下S3停止。主板四位数码管显示流水状态。若流水灯正向流水状态显示0000，若反向流水状态显示1111，若暂停状态，显示2222 #include AT89X51.H sbit S3=P3^2; sbit SRCLK=P1^1; sbit RCLK=P1^2; sbit SDO=P1^3; sbit SDI=P1^4; unsigned char a[]={0x7f,0xbf,0xdf,0xef,0xfb,0xf7,0xfe,0xfd}; void xieru(unsigned char temp) { unsigned int i; RCLK=0; for(i=0;i8;i++) { SRCLK=0; if(temp0x80) SDI=1; else SDI=0; SRCLK=1; temp=1; } RCLK=1; } void delay() { unsigned int i,j; for(i=0;i2;i++) for(j=0;j110;j++); } void main() { unsigned int k; while(1) { if(S3==0) { delay(); if(S3==0) { k++; while(!S3); } } if(k==8) k=0; xieru(a[k]); } } （595控制的）每按一下S3键流水灯正向走一个，当按到第八个时，返回，从第一个灯开始，依次循环； #include AT89X51.H sbit S3=P3^2; sbit SRCLK=P1^1; sbit RCLK=P1^2; sbit SDO=P1^3; sbit SDI=P1^4; unsigned char a[]={0x7f,0xbf,0xdf,0xef,0xfb,0xf7,0xfe,0xfd}; void xieru(unsigned char temp) { unsigned int i; RCLK=0; for(i=0;i8;i++) { SRCLK=0; if(temp0x80) SDI=1; else SDI=0; SRCLK=1; temp=1; } RCLK=1; } void delay() { unsigned int i,j; for(i=0;i3;i++) for(j=0;j110;j++); } void main() { unsigned int m; unsigned char k=0xff; while(1) { if(S3==0) { delay(); if(S3==0) { k=ka[m++]; while(!S3); } } if(m==9) { m=0; k=0xff; } xieru(k); } } （595控制的）S3按一下第一个亮，再按一下，前两个亮；再按一下，前三个亮，依此类推。当八个灯都亮了之后，再按一下又回到第一个灯亮。 #include AT89X51.H sbit S3=P3^2; sbit SRCLK=P1^1; sbit RCLK=P1^2; sbit SDO=P1^3; sbit SDI=P1^4; sbit P36=P3^6; unsigned char a[]={0x7f,0xbf,0xdf,0xef,0xfb,0xf7,0xfe,0xfd}; unsigned char b[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; void xieru(unsigned char temp) { unsigned int i; RCLK=0; for(i=0;i8;i++) { SRCLK=0; if(temp0x80) SDI=1; else SDI=0; SRCLK=1; temp=1; } RCLK=1; } /*void delay(unsigned int sz) { unsigned int i,j; for(i=0;isz;i++) for(j=0;j110;j++); }*/ void xianshi(unsigned int ds) { unsigned int i; for(i=0;i30000;i++) { P2=0x00; P36=0; P0=b[ds]; P36=