根据设定好的六位密码，采用遥控按键实现密码的输入功能，当密码输入正确之后，数码管显示正确的密码，当密码输入不正确，则显示错误信息ERROR。为了确保密码的安全性，在输入过程中用“—”符号来代替密码显示。-According to predetermined six passwords, using remote control keys to achieve the password input function, when the correct password, the digital display the correct password when the password is entered incorrectly, an error message ERROR. In order to ensure the security of the password in the input process using " -"　symbols to replace the password display.