基于485串行通信总线的电子抢答器系统

摘要：本文描述了一种电子抢答器的设计方案和实现。这一电子抢答器系统采用以PC和AT89S51为核心，以多机通信技术特性为基本机制，串行RS485为主要通信手段的架构。它提供了包括抢答时限控制，抢答竞争检测，实时分值更新等主要功能，并辅以相关音响和LED状态指示，最终实现了一种电子抢答器系统的简单原型。

-485 serial communication bus based electronic Responder system Abstract: This article describes an electronic answering device design and implementation. This electronic Responder system using a PC and AT89S51 as the core, multi-machine communication technology characteristics as the basic mechanism for serial RS485 as the main means of communication architecture. It provides time control, including answer, answer in competition testing, real-time score updates and other major features, supplemented by related audio and LED status indication, the final implementation of a simple electronic Responder system prototype.