（1）三位数的电子密码锁，通过输入的数字控制密码锁的开关 （2）开锁期间用户可自行设置密码 （3）输入密码正确开锁 -(1) The three-digit electronic code lock, through the input of the digital control lock switch (2) unlock their own during the user to set a password (3), enter the unlock password is c

四位密码锁的VHDL代码设计 四位密码锁的VHDL代码设计-Four of the VHDL code design locks four VHDL code design code lock