本次设计是利用PLC（Programmable Logic Controller）对PLC控制智力抢答器进行控制。首先，选择这个题目之后，我对本次设计进行了全面的思考。使自己对本次设计有一个大致的总体思路，然后仔细分析PLC控制的三路智力抢答器的工作原理，以及它的一些工作过程，分析后得出它主要需要完成主持人的控制、选手的抢答、计时及计分输出显示功能等。-The design is the use of PLC (Programmable Logic Controller) PLC control intelligence Responder control. First, choose this topic, I design the comprehensive thinking. To make themselves have a general overall idea of ​ ​ the design, and then carefully analyze the PLC-controlled three-way the Intelligence Responder works and some of the work process analysis based mainly need to complete control of the host players The answer, timing and scoring output functions.