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| 基于单片机的指纹考勤系统
摘 要
本文主要介绍的是基于单片机的指纹考勤系统，系统使用STC90C52RC做为核心，具有成本较低、精度较高的特点。整个电路采用的是模块化设计，主要包括单片机主控模块、指纹采集模块、时钟模块、显示模块、语音播报模块、时钟模块、存储模块和按键设置电路等一系列模块，完成指纹考勤系统的基本功能，其中包括：指纹录入、指纹删除、指纹签到以及时间设置等功能，并实现在做出相应操作时显示模块可以显示相应的文字，如：注册指纹、删除指纹、打卡编号和状态以及时间设置等，同时语音播报模块也会播放相应语音，如：指纹录入成功、指纹删除成功、打卡成功、您已迟到等。
关键词：指纹识别；语音播报；单片机；液晶显示
Abstract
This paper mainly introduces the fingerprint attendance system based on MCU.The system uses stc90c52rc as the core,which has the characteristics of low cost and high precision. The whole circuit adopts modular design,mainly including MCU main control module,fingerprint acquisition module, clock module, display module, voice broadcast module, clock module, storage module and key setting circuit. It completes the basic functions of fingerprint attendance system,including fingerprint entry, fingerprint deletion,fingerprint check-in and time setting Now when making the corresponding operation, the display module can display the corresponding text, such as: register fingerprint, delete fingerprint, punch in number, status and time setting, etc. at the same time, the voice broadcast module will also play the corresponding voice,such as: fingerprint entry success, fingerprint deletion success, punch in success, you are late, etc.
Key Words: Fingerprint recognition; voice broadcast; MCU; LCD display
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