数字锁即电子密码锁。锁内有若干密码，所有的密码可以用户自己设定。数字锁有两类：

一类是平行接收数据，称为并行锁；一类是串行接收数据，称为串行锁。如果输入代码与锁

内密码一致，锁被打开；否则，应封闭开锁电路，并发出报警信号。-Digital lock or electronic lock. There are a number of lock password, all passwords can be user set. Digital lock there are two types: one is to receive data in parallel, called parallel locks　One is the serial receive data, as serial lock. If you enter a code and lock the same within the code, the lock has been opened　otherwise, should be closed to lock the circuit, and an alarm signal.