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設(shè)置芯片端口控制16個燈循環(huán)點亮 |
#include<reg51.h> sbit CLK=P1^0; sbit IN=P1^1; a[]={0xFE,0xFD,0xFB,0xF7,0xEF,0xDF,0xBF,0x7F}; void delay(unsigned int i) { unsigned int j; unsigned char k; for(j=i;j>0;j--) for(k=125;k>0;k--); } void send_byt(unsigned char temp) { int i; for(i=0;i<16;i++) { if(temp&0x80) { IN=1; CLK=0; CLK=1; } else { IN=0; CLK=0; CLK=1; } temp=temp<<1; //temp左移一位 } } void main() { int i; while(1) { for(i=0;i<8;i++) { send_byt(a[i]); delay(4000); } } } |
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