智能抢答器。用51单片机实现的智能抢答器系统。拥有按键检测模块、led模块、掉电储存模块、时钟中断模块、单片机控制模块等多个功能模块。-Smart Responder. Intelligent MCU with 51 Responder system. Has a key detection module, led module, power-down storage module, the clock interrupt module, MCU control module and other