51單片機常見的五種流水燈編寫方式

1、For personal use only in study and research;not for commercial use 51單片機常見的五種流水燈編寫方式通過改變賦值實現(xiàn)流水燈void mai n()while(1)P2=0 xfe;delay1ms(500);P2=0 xfd;delay1ms(500);P2=0 xfb;delay1ms(500);P2=0 xf7;delay1ms(500);P2=0 xef;delay1ms(500);P2=0 xdf;delay1ms(500);P2=0 xbf;delay1ms(500);P2=0 x7f; delay1ms(500);

2、通過公式運算實現(xiàn)流水燈void mai n()while(1) uint a,b=1;P2=0 xfe; delayms(500); for(a=0;a7;a+)P2-=b; / P2=P2-bdelayms(500);b=b*2; /都化為同一類型進制運算通過操作符 與“| ”實現(xiàn)流水燈(通過移位實現(xiàn)流水燈)void main()uchar a,i;while(1)a=0 xfe; /點亮第一位LED燈for(i=0;i8;i+)P2=a;a=a1; /左移一位a=a|0 x01; /左移一位后與0 x01相或，保證左移后最低位為1 delay_ms(500);通過庫函數(shù)_crol_ (字符

3、左移)實現(xiàn)流水燈void main()uint a;a=0 xfe;while(1)P2=a;a=_crol_(a,1);delay_ms(500);采用數(shù)組實現(xiàn)流水燈uchar code table=0 xfe,0 xfd,0 xfb,0 xf7,0 xef,0 xdf,0 xbf,0 x7f; void main(void)uchar i;while (1)for(i=0;i8;i+) 循環(huán)點亮8只LED燈P2=tablei;delay_ms(500); /延時500毫秒僅供個人用于學習、研究；不得用于商業(yè)用途。For personal use only in study and rese

4、arch; not for commercial use.Nur fur den pers?nlichen fur Studien, Forschung, zu kommerziellen Zwecken verwendet werden.Pour l etude et la recherche uniquementades fins personnelles; pasades fins commerciales.ToJI E Kogfljirogeifcc,TOpBicnob3 groimio麻yqeHuicic碼egoBua H Hudo員冶HBIucno員B30BaTbCEBKoMMep

5、qeckux qeiix.-以下無正文-僅供個人用于學習、研究；不得用于商業(yè)用途。For personal use only in study and research; not for commercial use.Nur fur den pers?nlichen fur Studien, Forschung, zu kommerziellen Zwecken verwendet werden.Pour l etude et la recherche uniquementades fins personnelles; pasades fins commerciales.ToJI E Kogfljirogeifcc,TOpBicno