基于fpga的多路抢答器 分为4路 有一路抢答后 其余按键将失灵 当主按键按下后 将正常运行-Fpga-based multi-channel Responder Responder is divided into four road all the way to rest after a failure when the main button to normal operation after the button is pressed

4人抢答，具有20秒倒计时报警清零机制，在线调试通过-Four Responder, with 20 seconds countdown alarm clearing mechanisms, online debugging

这是用51单片机做的一个抢答器，右四路抢答，分别根据按键的不同，发出不同的抢答声音。-This is done with a single-chip 51 Responder, the right answer in four, respectively, depending on the key issue to answer in a different voice.