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程序部分* k8 f; ~. M; v+ c9 t3 e ~
#include <reg51.h>
6 [# z. c$ |% [/ f+ G0 }4 t8 T4 Qvoid delay (unsigned int i)
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unsigned int k;" H3 n2 [8 u4 P
for (k=0;k<i;k++);
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void main()4 ]3 h$ y! Q5 ]# ]& ?
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unsigned char aa,i;/ r# K$ i0 o# h1 m! w# ~1 i
while(1)
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aa=0x80;6 D& b4 s) N0 P' E8 Z7 i* ?% W
for(i=0;i<8;i++)" F: \7 R+ J* U' _( G6 u
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P1=aa;
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aa>>=1;//左移" L: F2 ^# _2 K3 ^4 O
}
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