1、 I 多功能数字钟设计与制作 学生：XX 指导教师：XX 内容摘要：多功能数字钟是在具有基本钟表功能的基础上又增加了定时控制、 仿广播电台报时功能、自动报整点时数、触摸报整点时数。这样的数字钟以其超 越的功能越来越被更多的人们所接受。 在设计数字钟时可以采用中小规模集成电 路组成电子钟； 也可以利用专用的电子钟芯片配以显示电路及其所需要的外围电 路组成电子钟；还可以利用单片机来实现电子钟等，经过多方面比较后采用多单 元电路组成。这样虽然操作时有很大困难但设计相对清晰易懂，一目了然。PCB 制作还必须在所有设计和制作结束后，首先经过检测没有问题才能焊接器件。并 进行进一步的检测。保证电路不能在焊
2、接地方出现短接、漏接现象。错综复杂的 接线来回穿梭在电路板上，需要制作者用有超强的细心耐性，和更灵活的办法。 确保质量！在遇到困难时有一个平静的心理，和良好的素质。在保证了数字钟在 正长运行下，其次一个美观的外表更能让更多人喜欢。本这个原则开始我们的探 索之路。 关键词：译码器 计数器 校时电路 II Multifunction digital clock designMultifunction digital clock design Abstract:Abstract: The multi-function digital clock timing control basic watch
3、functions on the basis of, imitation Radio repeater function automatically reported to the whole number of touch reported hours. Digital clock beyond its function is increasingly being accepted by more people. Small and medium-scale integrated circuits can be used in the design of the digital clock
4、electronic clock; can also use a dedicated electronic clock chip together with the display circuit and peripheral circuit electronic clock; can also use the microcontroller to implement the electronic clock, after many aspects of multi-unit comparison circuit. Although the operation very difficult,
5、but the design is relatively clear and easy to understand at a glance.PCB production must also be the end of all design and production, first tested there is no problem to welding device. And further testing. Ensure that the circuit can not be shorted in the welding places bobble phenomenon. The int
6、ricate wiring back and forth on the circuit board, require producers to use super careful patience, and a more flexible approach. To ensure quality! In a calm mental difficulties, and good quality. To ensure the digital clock in the positive long run, followed by a beautiful appearance but also allows more people like. With this principle is the beginning of our path of exploration. Keywords:Keywords: Decoder Counter Timing circuit . III 目 录 前言 . 1 1 电路设计 1 1.1 设计方案 1 1.2 单元电路的设计 2 1.2
