點亮發(fā)光二極管的兩種程序:7 ~/ m) a8 r5 q6 Q2 ^' Y
#include<reg52.h>
( {7 D, t& t8 X9 [& tsbit led=P0^0;
& p+ u' Z5 E% q2 {) W+ Evoid Delay()
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unsigned char i,j;
0 K* }) Y' o: y2 U7 @$ N0 |- jfor(i=0; i<255 ;i++;)
! R9 r7 P2 v- z. W$ E for(j=0; j<255 ;j++;) u4 H7 @& w5 p, y+ Q6 R
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void main()
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6 Z2 d) q7 o/ q, `2 Dwhile(1)
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5 ]8 p' O" P' N Y1 A2 z9 Qled=0;: M+ [6 k( d$ K8 d; C
Delay();1 B2 P1 Z% Q6 Q( e2 ]$ K! e$ @# ^
led=1;8 c7 I) |8 B% y$ }6 t
Delay();5 u2 L3 c5 F# R+ g* c! U
}
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