T89S52单片机以及DS1302时钟芯片，其中AT89S52单片机用12M晶振驱动；DS1302时钟芯片用32.768K晶振驱动；以C语言程序设计为基础，设计一个用1602液晶片显示年、月、日、时、分、秒、星期的时钟。用键盘来设置DS1302的参数，可以通过键盘修改时间、星期、日期，也可以通过单片机复位键把时间、日期复位到原来的。-Singlechip T89S52 and DS1302 clock chip, which AT89S52 Single-chip crystal oscillator with 12M drive　DS1302 clock chip used 32.768K crystal driver　to C language program design, based on the design of a liquid crystal film with 1602 year, month, day , hours, minutes, seconds, weeks clock. DS1302 using the keyboard to set the parameters, can be modified through the keyboard, week, date, single-chip microcomputer can also be key to reset the time, date reset to the original.