摘要：
#include<reg52.h>typedef unsigned int u16;typedef unsigned char u8;sbit key = P3^2;//sbit led = P1^0;////延时函数void delay(u16 num){ u16 x,y; for (x=num; 阅读全文
摘要：
#include <reg52.h>typedef unsigned char u8;typedef unsigned int u16;sbit led = P1^0;u8 timer;void main (void){ TMOD = 0x01;//设置TMOD，使得T0工作在16位定时。 TH0 阅读全文