13 1602液晶显示的DS1302实时时钟 /*************** writer:shopping.w ******************/ #include <reg52.h> #include <intrins.h> #include <str

#include<reg51.h> #define uchar unsigned char sbit scl=P2^1; sbit sda=P2^0; uchar ack_sign; //应答标志 应答为1，不应答为0 void delay() { uchar i=1;