摘 要
随着人们生活水平的提高，如何实现家庭防盗这一问题也变得尤为突出。在科学技术不断发展的今天，电子密码防盗锁作为防盗卫士的作用显得日趋重要。
本文从经济实用的角度出发，系统由STC89C52与低功耗CMOS型E²PROM AT24C02作为主控芯片与数据存储器单元，结合外围的键盘输入、LCD显示、报警、开锁等电路模块。它能完成以下功能：正确输入密码前提下，开锁；错误输入密码情况下，报警；密码可以根据用户需要更改。用C语言编写的主控芯片控制程序与EEPROM AT24C02读写程序相结合，并用Keil软件进行编译，设计了一款可以多次更改密码，具有报警功能的电子密码控制系统。 曾凡亚本密码锁具有设计方法合理，简单易行，成本低，安全实用，保密性强，灵活性高等特点，具有一定的推广价值。
关键词：电子密码锁；报警；液晶显示
朗读
失而复得的圣诞礼物显示对应的拉丁字符的拼音
Design of Electric Password Lock Based on MCU
海音寺潮五郎Abstract印度教父
山猪炮
As people's living standards improve, the question how to achieve home security has become particularly prominent. In science and technology is developing continuously, electronic code lock as a security guard's role is increasingly important.
This article from the economical point of view, the system by the STC89C52 with low power CMOS based E ² PROM AT24C02 as the master chip and the data memory unit, combined with the external keyboard, LCD display, alarm, unlock and other circuit modules. It performs the following functions: enter the password correctly under the premise of unlocking; wrong password case the alarm; password can be changed according to user needs. Master in C language control program and EEPROM AT24C02 chip to read and write process are combined and compiled with the Keil software, designed a number you can change the password, the password with an electronic alarm control system.
The lock has a reasonable design, simple, low cost, safe and practical, confidentiality, flexibility, and high, with some promotional value.
Key Words：Electric Password lock;Alarm; LCD Display
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