High-Precision Timing System Based on Microcontroller
The task of timing system is countdown on a set date and showing the time from current date to the setting date to enhance peoples attention and sense of urgency.A kind of high-precision timing system is introduced.The system is controlled by single-chip microcontroller.High integration clock chip is used as clock module.System hardware design and software design are introduced.System hardware design includes design of clock module,its connection with single-chip microcomputer,and the design of display module.System software design includes the settings of single-chip serial port,its initialization,the reading and writing of the clock module,the countdown program and the display program.Compared with other timing system which consists of frequency demultiplication by multivibrator,this system is more stable and reliable.The accumulative error is zero when long-time running continuously.Because the system control module is simple,it is convenient to be developed and utilized.Practice shows that this high-precision timing system can meet practical needs well.
high-precision timing microcontroller clock chip
Cao Rui
School of Computer and Communication Engineering Zhengzhou University of Light Industry Zhengzhou, China
国际会议
沈阳
英文
131-136
2012-05-25（万方平台首次上网日期，不代表论文的发表时间）