主控芯片采用宏晶科技公司的51核心的STC89C52单片机用于采集矩阵键盘的输入和对液晶屏的输出以及对外设的控制。具有保存密码功能，断电后仍然可以将修改后的密码烧录到单片机自带的2K的E2PROM中，1分钟无按键自动进入节电模式-Wang Jing master chip 51 core technology companies for the acquisition matrix STC89C52 SCM keyboard input and the output of LCD screen and the peripheral control. With the save password function, even after power off the password can be modified to burn the E2PROM MCU 2K comes in 1 minute automatically enters a power save mode no key