抢答器由计数器、寄存器、集成定时器和译码显示等组合、时序电路组成。可分为抢答电路，定时电路，报警电路等几个单元部分。每个单元电路分别可以处理一些抢答竞赛中的基本问题。-Responder by the counters, registers, timers and decoding integrated display combinations, timing circuit. Responder can be divided into circuits, timing circuits, alarm circuits, and several other cell parts. Each unit can deal with some answer in the circuit race, respectively, the basic problem.