八路抢答器，基于单片机stc89c52，液晶屏lcd12864，程序包涵有一个主持人按键，八个选手按键，同时可以显示选手间的抢答时间差，防止多次抢答，同时超时不能抢答。还配有一个时钟芯片DS1302，可以手动校准时间。总共三个界面,同时配有DXP图-Eight-way responder, based on the microcontroller stc89c52, LCD display lcd12864, program includes a host keys, eight buttons