说明：  很好的东西，用硬件实现的8路数码显示抢答器，有仿真和硬件pcb电路。很好的东西值得收藏。具体功能如下： （1）抢答器同时供8名选手或8个代表队比赛，分别用8个按钮S0 ~ S7表示。 （2） 设置一个系统抢答指示灯，一个清除和抢答控制开关S，该开关由主持人控制。 （3） 抢答器具有锁存与显示功能。即选手按动按钮，锁存相应的编号，并在七段数码管上显示选手号码。选手抢答实行优先锁存，优先抢答选手的编号一直保持到主持人将系统清除为止。
(Good things, with 8-way digital hardware implementation show Responder, a simulation and hardware pcb circuit. Good things worthy of collection. Specific functions are as follows: (A) Responder same time for eight players or eight team competition, respectively, with eight buttons S0 ~ S7 representation. (2) to set up a system to answer in light, a clear and Responder control switch S, the switch is controlled by the moderator. (3) Responder has a latch and display capabilities. That players press the button, the latch corresponding number, and in the seven-segment digital tube display player number. Players Responder implement priority latched priority answer the player s number has remained to host the system cleared.)