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.

基于51单片机的八位抢答器的程序，十分实用简单 -Based on eight of the 51 SCM Responder program is very simple and practical

STC 51单片机抢答器的原理图，可以工作-Schematic STC 51 microcontroller Responder can work