51单片机，用C语言写的密码锁程序包含键盘扫描，LCD输出显示，密码比队，报警输出，定时器等等很多功能主要是文档的书写格式很规范，是初学嵌入式程序编写人员的很好的参考资料 -51 MCU includes keyboard scanning, LCD output display the password than the team, alarm output, timers, and so many features, document writing format specification is a very beginner of embedded programming staff, with the lock program written in C languagea good reference