抢答器中现实的知识竞赛以及综艺节目中都有广泛的应用,设计六路抢答器有着重要的意义。通过PLC主机设计了知识竞赛中常用到的六路抢答器,该抢答器的倒计时功能显示是通过数码管显示实现的。系统中介绍了硬件接线图、以及输入输出接线图。 Responder in the reality of knowledge contests and variety shows have a wide range of applications, the design of six-way responder has an important meaning. Designed through the PLC host knowledge contest commonly used six-way responder, the countdown function of the responder is displayed through the digital display. System introduced the hardware wiring diagram, as well as input and output wiring diagram.