基于计数器的数字电子钟的设计  

A Design of Digital Electronic Clock Based on Counter

作　　者：李瑞[1] 王明艳[1] 向厚振[1] 沈泉波[1] 

机构地区：[1]中北大学信息与通信工程学院,山西太原030051

出　　处：《山西电子技术》2011年第4期19-20,共2页Shanxi Electronic Technology

基　　金：山西省研究生优秀创新项目(20081017)

摘　　要：本设计是一个基于计数器的数字电子钟装置。该装置电路的主要组成部分是555定时器、分频器、计数器、译码器、显示器、校时电路。译码代替机械式传动,用LED显示器代替指针显示进而显示时间,减小了计时误差。这种表具有时、分、秒显示时间的功能,还可以进行时和分的校准,片选的灵活性好。这种用数字电路实现的电子钟与机械式时钟相比具有更高的准确性和直观性。The design is a digital electronic clock device based on counters. The digital circuit mainly contains many components such as the 555 timer, multivibrator, counter, decoder, display and checkout circuit. The decoding is used instead of mechanical transmission and LED display instead of a pointer display for time, it reduces the timing error. This counter has hours, minutes, seconds function to show the time. Hours and minutes can also be used for calibration with a good flexibility of chip select. Compared with mechanical clocks, the digital electronic circuits have higher accuracy and visuality.

关 键 词：555定时器 分频器 计数器 译码器 显示器 

分 类 号：TN873[电子电信—信息与通信工程]