主要由AT89S52,lcd1602,ds1302以及4*4键盘的控制是实现的一个简单电子表 适合初学单片机者下载 ,Mainly by the AT89S52, lcd1602, ds1302, as well as 4* 4 Keyboard control is to achieve a simple single-chip electronic form suitable for beginners to download

DS1302+AT89S52的程序 非常详细-DS1302+AT89S52