程序部分
; s1 a# ~7 _2 V5 }+ d h#include <reg51.h>
6 A! }* G4 r9 c# ^void delay (unsigned int i)! N# Z/ G1 `, w* m$ A! q
{
$ X" `& a7 m% aunsigned int k;1 H; p) S3 e" e1 L
for (k=0;k<i;k++);; [5 w+ U$ A. l" B+ C
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void main()0 \# L! `9 i; }* g$ T: Q
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unsigned char aa,i;
$ O/ t( }7 _# u( cwhile(1), h# n0 [9 @+ H; C
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aa=0x80;
O* K9 }) \( Z& [6 z7 ~9 J" ffor(i=0;i<8;i++)- [5 p) O+ Y' }" w8 u* u' x
{
4 k Q2 G! f2 D* B& |/ t) qP1=aa;) t5 F: A/ S0 N! ^, a0 w% p( C& @
delay(25000);) ? v- P/ [) g
aa>>=1;//左移" K7 F& I, |/ J4 ?' u
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}
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发表于 2017-10-15 21:28:18
