硬件基础知识学习

较大电容值的电容作用：缓冲作用，稳定作用








LED闪烁程序：
#include<reg52.h>

sbit LED = P0^0;
sbit ADDR0 = P1^0;
sbit ADDR1 = P1^1;
sbit ADDR2 = P1^2;
sbit ADDR3 = P1^3;
sbit ENLED = P1^4;
void main()
{
    unsigned int i = 0;
    ENLED = 0;
    ADDR3 = 1;
    ADDR2 = 1;
    ADDR1 = 0;
    while(1)
    {
        LED = 0;
        for(i=0;i<3000;i++);
        LED = 1;
        for(i=0;i<3000;i++);
    }
}