电子密码锁。主要工作部分是将输入密码与正确密码进行比较，密码正确时红色发光二极管亮，表示开锁成功，密码错误则开锁失败。同时经过显示译码器作用到数码显示器显示密码。随着电子产品向智能化和微型化的不断发展，数字逻辑电路电子芯片已成为电子产品研制和开发首选的控制器。-Electronic locks. The main part is to enter the password with the correct password comparison, the red LED lights when the password is correct, said unlock successful, the password is incorrect then unlock failed. After a while the digital display decoder role to display the password. With intelligent electronics and miniaturization to the continuous development of digital logic circuits electronic chips have become the research and development of electronic products preferred controller.