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数电课程设计

课程题目: 数字计步器

学 号： 311208002411

班 级： 电仪12-01

姓 名： 公博

指导老师： 朱红伟

目录

摘要···············································································3 前言···············································································4 设计要求·······································································5 系统框图·······································································5 电路设计及元器件选择···············································6 电路图及工作原理·······················································9 元器件清单··································································13 总结··············································································13 心得体会······································································14

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摘要：

本次课程设计设计的是一个数字计步器，通过采用脉冲信号来代替脚的每次行走所引起的震动，通过运用74LS390实现计数功能，采用数码管来显示步数并通过74LS47来实现对数码管的驱动，并且具有一定的复位清零功能。首先设计好原理图，然后通过仿真软件来实现电路图的校正和检验，最终得到正确的电路图。通过本次课程设计可以更好的掌握理论课所学数字电子技术基础中的译码器和计数器部分。并增加动手实践机会。

关键词：

脉冲信号、计数器、译码器、数码管

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