8051 MCU (STC89C52) eight lights light up from the middle to both sides-EEWORLD

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#include<STC89C5xRC.h>

void delay()//provide delay

{

int i,j;

for(i=0;i<120;i++)

for(j=0;j<120;j++)

{

;

}

int main()

{

while(1)

{

P2=0xFF; // All eight lights are off

delay();

P2=0xE7;

delay();

P2=0xC3;

delay();

P2=0x81;

delay();

P2=0;

delay();

}

Design ideas:

1 1 1 1 1 1 1 1 //P2=0xFF

1 1 1 0 0 1 1 1 //P2=0xE7

1 1 0 0 0 0 1 1 //P2=0xC3

1 0 0 0 0 0 0 1 //P2=0x81

0 0 0 0 0 0 0 0 //P2=0

Reference address：8051 MCU (STC89C52) eight lights light up from the middle to both sides

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