说明：  电子密码锁是基于FPGA实验平台设计的，能够实现密码输入、密码校验、密码设置和更改密码，错误报警和密码错误三次自锁键盘并报警的功能。
(Electronic locks, FPGA-based experimental platform can be achieved password entry, password verification, password settings, and change your password, false alarms and the wrong password three times since the keyboard lock and alarm functions.)