簡介
LED就是一個發光二極管,沒啥好說的。唯一 一點就是低電平有效!
原理圖
![](https://img.laitimes.com/img/9ZDMuAjOiMmIsIjOiQnIsIiNx8FesU2cfdGLwczX0xiRGZkRGZ0Xy9GbvNGL1EzXlpXazxiZpJmNj1SS242UhVTWtkVNmlmY2MWLJZDUDJWNPVHT1o3TvVTQClGVF5UMR9Fd4VGdsATNfd3bkFGazxSUhxGatJGbwhFT1Y0Mk9VZwlHdssmch1mclRXY39CXldWYtlWPzNXZj9mcw1ycz9WL49zZuBnLlNWMjlzYiF2Y2EmY2MmNhBDNlRjY2cjZ1EzNmBjZ3I2Lc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
代碼部分
#include <REGX52.H>
void delay()
{
unsigned int i;
for(i=0;i<30000;i++);
}
main()
{
unsigned int i;
unsigned char J;
while(1)
{
/*P0=0xFE;
delay();
P0=0xFD;
delay();
P0=0xFB;
delay();
P0=0xF7;
delay();
P0=0xEF;
delay();
P0=0xDF;
delay();
P0=0xBF;
delay();*/
P0=J=0xFE;
delay();
for(i=0;i<6;i++)
{
J=J<<1;
J=J|0x01;
P0=J;
delay();
}
}
}