1、 第 1 页/共 30 页 摘摘 要要 现代生活的人们越来越重视起了时间观念, 可以说时间和金钱划上了等号。 这为数字钟的存在创造了平台。 数字钟是采用数字电路实现对 “时” 、“分” 、“秒” 数字显示的计时装置。数字钟的精度、稳定度远远超过老式机械钟。数字钟其 小巧,价格低廉,走时精度高,使用方便,功能多,便于集成化而受广大消费 的喜爱,因此得到了广泛的使用。 在这次设计中,我们采用 LED 数码管显示时、分、秒,以 24 小时计时方 式,根据数码管动态显示原理来进行显示,用 12MHz的晶振产生振荡脉冲,定 时器计数。该设计中,电路具有显示时间的基本功能,还可以实现对时间的调 整。并采用
2、单片机编程的方式使其使用方便、精度高。另外还通过 protues 软 件对设计的数字钟进行了有效的仿真,使得设计的电子产品更具有实用性 关键字:数字钟; 数码管; 单片机; protues 软件 第 2 页/共 30 页 Abstract There is a growing emphasis on modern life from the time the concept of time and money can be said to mark the equal sign.This digital clock presence to create a platform.Digital C
3、lock is a digital circuit on the “when“, “minute“, “second“ digital display of the timing device.Digital clock precision, stability, far more than the old mechanical clock.Digital clock its small, low cost, travel time and high precision, easy to use, multi-function, ease of integration and loved by
4、 the majority of consumers, it has been widely used. In this design, we use LED digital display hours, minutes, seconds, 24-hour time mode, according to digital control theory to dynamic display to display, using 12MHz crystal oscillation pulse, the timer count.The design, the circuit has the basic function of display time, can be achieved for the time adjustment.Microcontroller programming approach and adopt it easy to use, high accuracy.Software is also designed by protu