THE ACHIEVEMENT OF MICROCOMPUTER TIME CONTROLLER IN SOFTWARE
ABSTRACT
Clock became a friend of human that can not be lacked since it came into being. It appears every place where human beings take activities. And microcomputer time controller is the basic electric product which appeared in modern life of human. So it has much realistic meaning for us to study, exert and expand. Its basic function is to time, to regulate time and to set clock and so on. It is a multiple-functional clock.
AT89S52 MCU(Micro Controller Unit) is the core of this design, and it realizes by controlling the clock chip DS1302. It has the fuctions of timing and so on. Besides, it's very precise. and it cannot lose its digital when it power out.This program was finished by C language, and it was compiled and simulated by KEIL software. We can ring the bell by a output show of a LCD1602,an buzzer alarm clock as normal situations situations. This program also make a design to have exchanging between human and computer by four buttons.Through these buttons, we can make settings of ringing a bell, timing, countdown function and regulating time.
Key words: time controller；clock chip；Micro Controller Unit；exchanging between human and computer
